Jurgen Klopp travels back to the Westfalenstadion on Thursday as his Liverpool side go head-to-head with his former employers, Borussia Dortmund, in the Europa League quarter-finals.
It was the tie every neutral had been hoping for - and it promises to be an epic two-legged European contest.
No bad blood exists between Klopp and Dortmund and there will always be a huge mutual respect between the two parties; however, the German club couldn’t resist leaving a cheeky message for ‘Kloppo’ at their home stadium. (Scroll down this page to see the photo).
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A sign with an arrow pointing to the visitors’ dressing room has been put up at Dortmund’s home stadium, ready for Liverpool’s arrival, along with Klopp’s name and a smiley face above it.
A gentle reminder for Klopp to use the away dressing room, rather than the home one.
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Photo: BVB's reminder for Jurgen Klopp
Klopp is a Borussia Dortmund hero
Klopp spent seven years with Borussia Dortmund after joining the Bundesliga outfit from Mainz in 2008.
He won two league titles, one German Cup and two German Supercups during his time at the Westfalenstadion and is regarded by Dortmund fans as a club hero.
Dortmund’s passionate supporters will give Klopp a rapturous reception when he takes his place inside the away dugout on Thursday night - and, prepare yourselves, it might even get a little emotional during the night.
The reason why Klopp left Dortmund
Klopp made the difficult decision to leave BVB because, in his opinion, he was no longer the coach the club needed.
Dortmund struggled for much of the 2014-15 campaign under Klopp and briefly flirted with relegation before eventually finishing the season in seventh place.
“I am not tired. I may look tired but I am not. I am 0.0% tired. I haven’t had any contact with any other clubs but am not planning a sabbatical,” Klopp was quoted as saying by the Guardian after announcing his decision to leave the club.
“I have always said that the day I feel that I am no longer the perfect coach for this extraordinary club I will say that.
That is something I have thought about in every phase here at Dortmund and decided in the last few weeks, days, that I was no longer able to be absolutely sure about that. And then, because of the unusual relationship I have with this club, the trust we have for each other, it was my duty to tell the club.”
Can Klopp mastermind a win over BVB?
Six months later he replaced the sacked Brendan Rodgers at Anfield and is currently in the process of getting Liverpool to play the Jurgen Klopp way.
Dortmund are favourites to advance to the Europa League semi-finals - but if anyone should know how to beat the German club, it’s surely Klopp.
Will Liverpool beat Borussia Dortmund over two legs? Have your say by leaving a comment below.