Deco 20 is exaggerating. Balotelli was talented and still is. But he was twice as that overrated. Same story with Bojan at Barca. Many of these talented youngsters get so spoiled by the media and the fans at the young age that they can't simply keep it calm and modest in their head they lose the ground so quickly, they go down so fast in their career that many fail to get back to their feet once again.
Balotelli has the complete character of a diva who will never make it as big as many people people assumed. Talent alone is never enough to make it to the big stage, Attitude and dedication plays a much more important role than that. You are playing a career, not a game! And with no professionalism you will never make a professional career. If you want to be a clown then football field is not your place.