"He [Rooney] is a very good player but not the best in Manchester," said Balotelli.
Balotelli, currently sidelined with a knee problem, also claimed United fans stop him in the street in Manchester and plead with him to move to Old Trafford.
"Do United fans insult me?" said Balotelli. "No, they stop me in the street and say 'Mario, come to us'.
"But I dream of beating them because I know how much the City fans care.
"They are wonderful with me. When they sang my name after the hat-trick I scored, I had chills."