Maldini says the behaviour of the Manchester City striker, who is a huge Milan fan, just wouldn't be accepted by Rossoneri heavyweights.
"A player who plays for AC Milan," he told TMW, "has to honor the shirt and must do this seven days a week, around the clock.
"Of course, the Rossoneri are not saints, but Balotelli has showed character issues. And at Milan your behavior must always be clean, otherwise the doors are closed at the Milanello.
"But there is no doubt, this is a great talent."