The Ghanaian played under Klopp during a loan spell at Dortmund from Spurs.
Jurgen Klopp has certainly been a breath of fresh air since replacing Brendan Rodgers at Anfield. Whilst results have not dramatically improved the German is massively popular at the club and in England as a whole.
One of football's more controversial figures has now spoken about the Liverpool boss.
Kevin Prince Boateng, who played for Tottenham Hotspur and Portsmouth in the Premier League, has something of a reputation for not getting on with his managers. However that was not the case with Klopp.
The Ghanaian international played for Dortmund under the management of Klopp during a loan spell from Spurs in 2009.
In excerpts from his autobiography printed in Bild Boateng has stated:
"Dortmund was like Christmas, Easter and New Year's Eve on one day.
"Klopp's just the most wicked coach I have ever worked with, and not even because of his sporting skills, but just because he's a wicked guy.
"That's why every team he trains will always develop an incredible team spirit, and die for him on the pitch."
If Liverpool's boss was able to keep Boateng on side, then he can surely do it with anyone.
That will excite Liverpool fans ahead of the summer, with player recruitment likely at Anfield this term.
They have already secured Joel Matip but it seems that Klopp has the personality to attract any player to the club.
Boateng should not be on the radar, but the fact Klopp did not offend him, means he should be able to work with anyone - even though Klopp declined to sign him permanently.