Jurgen Klopp admits he was taken aback on his first visit to Old Trafford as Liverpool manager as he prepares for his final showdown with Manchester United.
The Reds make the short journey down the East Lancs Road to take on their bitter North West rivals on Sunday aiming to maintain their Premier League title challenge.
Klopp has won just two of his previous nine games at United, with the most recent clash only three weeks ago when Liverpool were beaten 4-3 in their FA Cup quarter-final.
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And asked about whether he had been fully aware of the ferocity of the rivalry between the two heavyweights before moving to Anfield, Klopp said: "Probably not the full extent of understanding because how can you?
"I was surprised by how powerful Old Trafford can be, because I only knew it about Anfield until then about what a stadium we have and the atmosphere we can create. But (Old Trafford) is not bad as well! I love this kind of intensity, focus on the game.
"I don't like it when it goes over on the top on the pitch which we had for sure in the beginning in Everton games where you go 'sorry, is any ref here to just tell them to stop doing that, it's just a football game?'. It wasn't that much against United but you realise pretty quick this is the one game a year where whatever happens, you better win that."
Klopp will leave Liverpool at the end of the season after almost nine years in charge having led the club to become champions of England, Europe and the world. The Reds have already won the League Cup this campaign, and remain
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