Kevin-Prince Boateng claims former Borussia Dortmund boss Jurgen Klopp has a fantastic ability to develop team spirit.
The 28-year-old attacker, who played for Tottenham and Portsmouth in England, spent a six-month loan period under Liverpool manager Klopp at Dortmund in 2009 and he was highly impressed with the German tactician.
“Dortmund was like Christmas, Easter and New Year’s Eve on one day,” Boateng wrote in an excerpt from his new autobiography serialised by German paper Bild.
“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.”
Boateng never signed permanently for Klopp with his £5million price tag and his controversial off-the-field behaviour believed to have prohibited any potential switch.
The Ghana international did though return to the Bundesliga when he signed for Schalke in 2013, however he was suspended in the summer of 2015 and never played for the club again with his contract being torn up in December 2015.
Several chapters of his book focus on his time in Gelsenkirchen, but Schalke sporting executive Horst Heldt revealed Boateng signed a non-disclosure agreement before leaving the club and so he would not be able to print anything controversial because he would be in breach of contract.
“It’s no news to me that Boateng wants to publish his memoirs,” said Heldt.
“Should there indeed be passages in the book where he makes negative comments about persons formerly or currently at the club, he will not be able to sell as many books as the fine will cost him.”
Kicker claim that Boateng would have to pay 500,000 euros if he were to breach the agreement.