According to the Daily Mail, the German did not enjoy his two-season-long stay at the Blues and was perceived as detached and immature by the people at the club. While the player got along with his colleagues, he reportedly never went out of his way to mix with people. He also came across as unenthusiastic in training, struggling to comprehend tactics as neither Frank Lampard nor Thomas Tuchel could bring the best out of the talented forward.