Balotelli is back in form after victory over Bologna on Friday.
"I am very critical of myself," Balotelli said.
"It doesn't bother me when journalists criticise me because I will already have done it myself.
"I am very happy to be able to be playing. Last year when I was watching from the sidelines I suffered slightly.
"Now I hope to be able to help the team.
"Am I a champion? I think I am a good player.
"I am a striker, but I would be willing to play in goal if it meant winning the Champions League!