Liverpool boss Jurgen Klopp paid a glowing tribute to Manchester City counterpart Pep Guardiola ahead of what could be the pair's final meeting, anointing him the best manager he has ever seen.
The pair have shared many memorable battles over the past decade, first in the Bundesliga and then at the vanguard of the Premier League, and face one last top-of-the-table clash at Anfield.
With Klopp leaving Merseyside at the end of the season, only the possibility of a meeting in the latter stages of the FA Cup could now add another chapter, leaving the German to reflect on their long battle for supremacy.
While Liverpool have a slender one-point lead going into the match and Klopp boasts a marginally superior head-to-head record in their 29 contests together, with 12 wins versus 11, he happily places the former Barcelona man as peerless in the modern game.
"Pep is the best manager in the world. I have a really good life being not even close to that," he said.
"I don’t know how could I judge managers from the past, but in my lifetime he’s the outstanding manager. I see excellence when I face it and Pep is definitely that.
"I was never frustrated, I knew round about 3,000 footballers who were better than me and I still loved the game; the others who were better than me, I didn’t know them.
"I just got told I have a positive record against Pep... I have no clue how that happened to be honest.
"It made me a better manager trying to find solutions. I know I’m quite good at what I’m doing as well, I don’t want to sound like, 'Oh my God, I’m just happy to be here', but you ask me about the best, he’s the best. Bam."
While lavish with his praise for Guardiola, Klopp did take issue with any negative characterisation of the duo’s relationship, insisting they were bound by similarities rather than differences.
"I don’t feel it’s a rivalry, but I understand why you call it that," he said.
"There’s no rivalry. We are both really competitive, we both want to win football games and we are both blessed with really good players in our teams.
"If we meet in the future it will be full of respect. We have not had the opportunity to meet each other more often, but we would have a lot to talk about. Definitely.
"On Sunday it’s not about me having that opportunity for the last time – it’s not sure anyway, maybe in the FA Cup we could meet again. It’s a big game. City games always were, always will be probably."
"Whatever the result, I don't think anybody should open the bottles of champagne"
Klopp rejected the notion that the match was effectively a title decider, with 10 more games still to play and Arsenal also firmly in the trophy hunt, but could not hide its significance.
"I don’t know who is playing on the weekend in the other leagues but it’s probably the game of the weekend and being able to be part of that is massive.
"Title race decider? I don’t know who thought that up. It’s really early, we could go through all the possible scenarios.
"Whatever the result, I don’t think anybody should open the bottles of champagne."
Liverpool have a major doubt over defender Ibrahima Konate after he came off injured in the second half of Thursday's 5-1 Europa League win at Sparta Prague, meaning Jarell Quansah could get the biggest start of his career alongside Virgil van Dijk.
Klopp could also welcome Mohammed Salah back to his starting XI, with the Egypt forward making a timely return from the bench in midweek.
Ahead of their 30th and possibly last meeting for some time Guardiola has acknowledged the role the German has played in driving him on.
The Spaniard said: "From the way he makes his teams play football, you always learn. It was always a pleasure to play against him and it will be on Sunday too."
Guardiola is not sure it will be the last time the pair face each other but, regardless, hopes they can meet socially at some stage in the future.
Guardiola has a rare losing record against Klopp, with 12 defeats and 11 victories against the Reds boss and added: "We might play in the FA Cup and, the future, nobody knows. He's young, I’m young, so I don’t know.
"Sometimes [we meet] in the corridor before press conferences but when we were honoured in the Hall of Fame years ago we spent time with families but, in terms of lunch or dinners, it never happened."
Guardiola also refused to get drawn into his players' war of words with Liverpool's Trent Alexander-Arnold.
The Liverpool defender has added spice to this weekend’s crunch clash by claiming that winning trophies means more to the Merseyside club, given the clubs' relative budgets.
City players Erling Haaland and Ruben Dias hit back by pointing out Alexander-Arnold has not won the treble – therefore suggesting he could not know how the Manchester club feel – but Guardiola does not want to add fuel to the fire.
Instead, he will simply encourage the champions to do their talking on the pitch in an encounter that could have a huge bearing on the destiny of the Premier League title.
The City manager said: "I’m so happy with my players, all the time, over many, many years.
"Do you think we’re not going to fight because Erling and Ruben talk? Without these talks we will not fight?
"We are there and, after what happened over the last years, we are going to try again tomorrow and do a good game.
"They defend the club not by responding to this guy but what they have done for many years on the pitch every three days. That is the best way.
"I could answer him [Alexander-Arnold], but why? It is what it is.
"I’m incredibly proud of what we have done and I don’t need that to prove to me what my players really feel and are trying to do it."
Guardiola was asked further about Alexander-Arnold’s comments as he held his pre-match press conference on Friday but simply wished the England international well.
Alexander-Arnold has been sidelined with a knee injury for the past month and is not expected to feature on Sunday.
He said: "I wish him well. I wish him a speedy recovery and to come back to the pitch as soon as possible."
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