And Sport-Express has a warning for Chelsea's players, with two of the German's former goalkeepers taking aim at his inter-personal skills.
“At some point he became a real dictator. He was unforgiving, " said former Mainz goalkeeper Heinz Müller.
“In terms of sports, Tuchel is something. His training was incredible. He is a true visionary. But in terms of human relations with him it is difficult," former Borussia Dortmund goalkeeper Roman Weidenfeller also said.