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It's the obvious one for Mario. There's no doubting his footballing intelligence, but off the ball he can be a little less than clever.
Part of Balotelli's charm is that he's idiosyncratic. There isn't another player in the world quite like him, and no one would change that. The famous £1,000 donation to a homeless man in Manchester, visiting a women's prison to have a look around, crashing an Inter press conference, even setting fire to his house with fireworks—it's all good.
That being said, there's a certain immaturity in Balotelli's character that's holding him back as a player. Foolish sendings-off, breaking club curfews, violent outbursts; it all has to stop if Mario is to become the world-class striker he has the potential to be.
Seven yellow cards in 12 Serie A games for Milan last term tell their own tale. Max Allegri will need him to be more cautious in the future.