I'm in America. I don't know how reputable the Daily Mail is. But according to the DM, Tevez was depressed, apparently ate anything and everything that was in front of him and not moving and afterward checked himself into a clinic. 

For your reading pleasure: http://www.dailymail.co.uk/sport/football/article-2033426/Carlos-Tevez-suffered-eating-disorder.html

My own opinion: yes, athletes are exceedingly well paid. But I have met professional athletes who get traded and find themselves in a strange town, putting up the family in a hotel, getting to know a new organization, etc. It can cause problems. Tevez is not the first nor the last player to go through this. I would add that addictions are awful. He'll get his share of jokes at his expense but he's got sympathy from me. I wish him well.