Former Milan striker Ganz feels Balotelli will be too much trouble for the Rossoneri.
"Balotelli is a great player, potentially one of the best in the world, but he is definitely not easy to manage," Ganz told TMW.
"A player must be measured off the pitch and in this respect he is certainly not an example to follow.
"(Massimiliano) Allegri is right when he says that he's wasting precious time in his career and could do much more. Now I do not know what kind of negotiations can be opened and which formula, the boy cost a lot and I do not think Manchester City are willing to make concessions."