The 1-0 Champions League defeat against Napoli was as concerning as it was disappointing. Losing to a 90th-minute goal will have upset Klopp, but more worrying was the number of players who underperformed.
Sunday’s visit of the defending Premier League champions is both clubs’ seventh match in 23 days between the September and October international breaks.
Liverpool won their first three but have since lost two and drawn one, and included in that half-dozen are Champions League encounters against Paris St Germain and Napoli and two games against Chelsea.
In the same period City have won five and lost one – a surprise Champions League defeat to Lyon – although the highest-placed top-flight side they have met in that time is Brighton, currently 15th.
“It is a tough game, absolutely,” said Klopp, whose side last season drew six of their 12 fixtures immediately after a Champions League tie.
“It is absolutely intense since the last international break. We cannot change that so we have to make sure we are ready.
“We don’t have to think about intensity. We have three days to recover and then we will face Man City.
“It would’ve been difficult any way at any time of the season, it is always difficult, but let’s have a look how the players are after the game and then we will prepare.
“Then we have our crowd at our backs. You could see Napoli used the atmosphere and we couldn’t calm it down, but on Sunday it will be 100 per cent different.”
This weekend is the second in succession Liverpool have faced a top-three side, having drawn at Chelsea thanks to Daniel Sturridge’s late equaliser on Saturday. Both teams have 19 points and while City have a superior goal difference, their record at Anfield is unimpressive.
Liverpool have won their last six home matches against their north-west rivals and are unbeaten in 11 in all competitions, with their last defeat to City at Anfield coming in May 2003.
They have also not lost a home Premier League match since late January but are not yet close to replicating their best form of last season. Sadio Mane has not scored in his last six matches, Roberto Firmino in his last four while Mohamed Salah has found the net just once in his last seven.
Defeat in Naples will be a worry but it may be the wake-up call Klopp’s players need.
“It’s a good game to learn from. That’s what we’re going to do – we’re going to analyse the game and see what we can do better,” midfielder Georginio Wijnaldum told liverpoolfc.com.
“We know what we can bring, we still have confidence, but this was a reality check on how things must not go. It’s a good lesson for us to get better. We have to take it as a lesson and then we have to carry on.
“We have done it better this season, so we can do it – but we have to do it every game.”
Last Updated: 04/10/18 12:05pmSalah 44 goals for Liverpool last season
Liverpool and Manchester City meet in a top-of-the-table Premier League clash at Anfield on Sunday afternoon. Ahead of the Renault Super Sunday clash, we asked the experts why they think Mohamed Salah isn't firing on all cylinders...
The Egyptian scored 44 goals for Liverpool last season, scooping both the PFA Player of the Year Award and the Golden Boot as he helped his side reach the Champions League final.Liverpool vs Man City
October 7, 2018, 4:15pm
But he hasn't quite hit the heights so far this season, scoring three goals in his first nine games this term.
So, heading into the Super Sunday clash on Merseyside, why isn't Salah firing on all cylinders? The pundits give us their verdicts…Salah's stats so far in the Premier League season for Liverpool Jamie Carragher
He's not in great form, but I don't really think he's in bad form either. I think a little bit too much has probably been made of Salah's form. He is only one goal down on last season. I hope Klopp is saying this to him about the goals he scored last season: if he doesn't get over 40 goals, it doesn't mean he's had a bad season. Ian Rush was Liverpool's greatest ever goalscorer and he only got 47 in one season. He never got 47 again, he would score 25 or 30 goals a season. If Salah gets 25 goals a season then he's had a great season.4:16 Jamie Carragher says too much has been made of Mohamed Salah’s current form and insists he is only one goal less than he was this time last season. Jamie Carragher says too much has been made of Mohamed Salah’s current form and insists he is only one goal less than he was this time last season. Matt Le Tissier
His start to this season is not too dissimilar to his start of the last one. He missed chances there and needed a few games to fully get into the stride of things. He has got a couple of goals and it's not like he is on a major drought at the moment. I don't think it's a major concern.Play Sky Sports Fantasy Football
Liverpool v Man City is a Sky Sports Fantasy Football game this weekendCharlie Nicholas
People forget he missed a lot of chances last season, but kept going and nicked lots to stay ticking over, it's that little bit that's not happening now for him. Last season we maybe expected 15-20 goals from him and he was unknown. He surprised us all, and now we expect more and teams know more about him. So this season is maybe going to be like what we expected in his first, 15-20 goals, but I'd expect him to surpass 20. He's probably being too selfish at the moment, as he feels that pressure to keep scoring, meaning he's shooting rather than passing, and defenders and keepers know what's coming. But he will still score plenty this season, no one should worry about that.Salah's stats so far in the Premier League season for Liverpool Phil Thomson
It's actually no different to last season, the difference is the world is watching from the start this time. Last season Liverpool fans saw him miss lots of chances, and it's the same this year. So they aren't panicking. The difference is this year the world expects more from him and you can tell in his face that pressure is telling on him. He's just snatching at chances. But it will come - it won't surprise me if he scores a hat-trick or more in a game soon.Paul Merson
He was never going to do what he did last season, but he would have been disappointed getting injured going into the World Cup. He got his country [Egypt] there and he was going to be the star, but he was only 50 per cent fit and that would have affected him.
You are going to the World Cup as one of the best players in the world and you get injured, so he would have been down about that. The other thing is he has had chances - it is not like he is not involved in the game and he has gone missing and we are asking, 'Where is Salah?' He could probably have had 10 goals, so it is only a tweak away…Xherdan Shaqiri came on as a second-half substitute for Mohamed Salah Ian Wright
He's doing what he did last season, he started last season in the same way but just took more chances. He's not scoring as many goals, but I wouldn't say he's playing any worse. He's still trying things, taking people on in certain areas and scoring the odd goal. Last year he was scoring all of his chances, this year he's missing some, but he's still playing well.
Pressure is all part of being a top player and having the season he did last year, it comes with the territory, so I don't think he'll be worried about it. I think Liverpool have got a long, hard season coming up - there's a lot of pressure on their players, it's still six or seven games in, and I think we'll see the best of him as the season goes on.Salah has three Premier League goals to his name so far this season Alan Smith
I don't think he was ever going to reach the levels he did last season. I think that was unrealistic to expect. There's not really too much wrong with his game but his finishing is certainly lacking the sharpness of last season. Maybe it's just a natural reaction from how things went for him last season.
However, he is still causing teams lots of problems but he's just not quite the player he was last term. He might become that player again soon but I don't think he will reach those level he hit last year. He has got the luxury of Liverpool winning at the moment and that's the main thing. It gives him time to hit top form again.Play Super 6
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Data and Analysis @datasmith101Liverpool host Manchester City live on Sky Sports Premier League from 4.15pm on Sunday
Last Updated: 04/10/18 2:36pm
Liverpool have beaten Manchester City three games running - but how did Jurgen Klopp's side do it? We check the stats...
The Reds host City live on Sky Sports Premier League on Sunday with recent head-to-head form on their side - but has Klopp discovered the formula to make it four in a row?
We look at how the teams set up in each fixture, average positions, activity on the pitch and statistical comparisons to discover how Liverpool achieved repeated success.Liverpool vs Man City
October 7, 2018, 4:15pm
Live onLiverpool 4-3 Man CityPremier League, January 14, 2018
After Manchester City had exploited Sadio Mane's sending off at the Etihad to win 5-0 earlier in the season, Liverpool were out for revenge in the return fixture - and that proved to be the recipe for a thrilling seven-goal thriller at Anfield.
Both managers set up in their favoured 4-3-3 formations but Alex Oxlade-Chamberlain set the tone with a penetrating dribble before unleashing a shot from outside the box that rifled past Ederson inside 10 minutes.
While Leroy Sane restored parity five minutes before the break with a powerful finish, bamboozling Loris Karius at his near post, Liverpool hit the front again in the second half, with Firmino out-muscling John Stones before deftly chipping his side ahead in the 59th minute.Alex Oxlade-Chamberlain scored a screamer during the 4-3 thriller, inflicting Manchester City's first league defeat of the season
Liverpool's third came from a trademark break, when Mohamed Salah pounced on a wayward Nicolas Otamendi pass and teed up a Mane rocket.
Then, Pep Guardiola's side were culpable of another error when Ederson's tame clearance fell straight to Salah mid-way inside City's half and the Egyptian lobbed City's stopper to establish a three-goal advantage.
Liverpool should have been home and hosed but their defensive frailties were exposed during a pulsating finish to the game, which saw City score twice in the final minutes, through Bernardo Silva and Ilkay Gundogen - although a fourth was just out of their reach.
The graphic below shows how both sides' average positions were evenly distributed, with Kevin De Bruyne joining City's front three, mid-way inside Liverpool's half. City focused attacks down the right flank via Raheem Sterling (No 7) and Kyle Walker (No 2) - looking to exploit rampaging left-back Andy Robertson (No 26).
For Liverpool, Oxlade-Chamberlain (No 21) advanced beyond midfield and averaged in City's half, alongside the front three - with Salah (No 11) pushing furthest forward to harass Otamendi (No 30) - which reaped reward for the Reds' third goal.
The passing combinations above suggest Liverpool probed down the left of midfield, with Georginio Wijnaldum (No 5) and Emre Can (No 23) linking defence with attack - before switching to Salah territory down the right in the attacking third.
City dominated across a raft of stats on the day, but Liverpool recorded superior numbers for fast breaks, shots on target, tackles, chances created and touches in the opposition's box.Liverpool 3-0 Man CityChampions League, April 4, 2018
The sides met again three months later in the Champions League quarter-finals, and Guardiola deviated from his preferred 4-3-3 and set up in a 4-2-3-1. The change was in vain, though, as Liverpool produced a masterclass in how to beat City.
Klopp's side were ahead within 12 minutes after a customary fast break down the right was started and finished by Salah. Ten minutes later, Oxlade-Chamberlain trumped his rocket from the previous meeting with an outrageous thunderbolt, before Mane headed a third past Ederson before the break.Mo Salah broke the deadlock
For City, remarkably, the graphic below shows how only two outfield players averaged in their own half during the game, with hotspots of touches in the centre circle.
Guardiola instructed his side to attack down the left flank in an attempt to expose Trent Alexander Arnold (No 66), resulting in half of City's attacks coming down that third of the pitch - with Sane (No 19) pinning back Dejan Lovren (No 6). But the youngster stood up to the test.
Liverpool's average positions remained strikingly similar to the previous meeting, with the exception of Oxlade-Chamberlain (No 21) and Salah (No 11) sitting slightly deeper.
The graphic also shows frequent passing combinations between Virgil van Dijk (No 4), Robertson (No 26), James Milner (No 7) and Mane (No 19), while Oxlade-Chamberlain and Alexander-Arnold also linked up down the right.
City dominated across the majority of stats, but, once again, Liverpool recorded more shots on target, fast breaks and tackles - in addition to attempting far more dribbles.Man City 1-2 LiverpoolChampions League, April 10, 2018
In desperate need of a big home win to overturn the first-leg deficit, Guardiola lined up in his third different formation in as many meetings with Liverpool, experimenting with an attacking 3-4-3 at the Etihad.
In contrast to the previous two games, Liverpool, looking to protect their advantage, were on the back foot for the majority of the game but stood firm to reach the semi-finals.The Reds mustered only 309 passes during the entire game, compared with City's 646
City drew first blood with just two minutes on the clock. The referee waved away claims for a free-kick after Raheem Sterling nudged Van Dijk, with Fernadinho feeding the England winger to assist Gabriel Jesus, whose finish ramped up the atmosphere as a famous comeback appeared to be on.
But Liverpool withstood the subsequent storm and were level early in the second half after Mane drove into a crowded box and Salah chipped the loose ball over City's scattered defence into an empty net.Liverpool celebrate Mo Salah's equaliser
Klopp's side recorded a third successive win over City, and a 5-1 aggregate scoreline in those fixtures, when Firmino pounced on Otamendi - who had dawdled on the ball in search of a short pass - and slotted the ball past Ederson.
In terms of tactics, City pushed even further up the pitch than they had in the first leg, with Otamendi being the only outfield player to clearly average in his own half.
Again, Guardiola instructed his side to focus attacks down the left flank through Aymeric Laporte (No 14), David Silva (No 21) and Sane (No 19) - while De Bruyne (No 17) dominated distribution from central midfield.
The graphic above reveals how City's advanced tactics suffocated Liverpool, restricting the Reds' passing combinations to a bare minimum - only Roberston (No 26) and Firmino (no 9) formed any notable link-up play.
As was the case in the previous two meetings, the Reds attempted to break down the right flank - with Sadio Mane (No 19) switching to the right behind Salah (No 11).
The stats bear out those positional and passing mismatches, with City equalling or surpassing Liverpool across every key stat - except, of course, goals.Summary Will Jurgen Klopp extend his managerial victories over Pep Guardiola to nine? His current record of eight victories to date is more than any other manager
With all three games combined, the graphic below reveals Liverpool's key statistical advantages were attempting more fast breaks and hitting more shots on target - in addition to narrowly recording more tackles.
Despite Liverpool's most dangerous asset being breaking quickly, the majority of their goals have come from periods of dominance in the game - with the exception of the second half in January's Premier League contest.
So, Liverpool are likely to stick to the same tactics and hit City with fast breaks, looking to eke out opportunities and shoot on sight - hounding Guardiola's side with tackles and interceptions in their trademark press.
Meanwhile, City are likely to try and replicate their performance from last time out and hope their efforts will reap reward with a more clinical edge in front of goal - but will Guardiola instruct his team to advance so far forward this time?
Watch Liverpool v Manchester City live on Sky Sports Premier League from 4.15pmPlay Super 6
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