Manchester City striker Mario Balotelli is prone to a regular wobbler, admits ex-roommate Jose Coelho.
Benfica midfielder Coelho roomed with Balotelli when they were juniors at Inter Milan.
He told the People: "If Mario is having a bad day, it's best to leave him alone. Don't annoy him.
"There are also games when the ball passes in front of him and he doesn't get involved.
"You notice that things from outside affect him on the inside. If he had emotional control, he'd be one of the best in the world.''