Cassano has recently been linked with a move away from the Rossoneri after impressing while away on international duty.
“I have no doubts over whether he will stay and nor have the club,” Allegri said. “It’s just up to Cassano whether he wants to stay with a team where he will have to fight for his place and play to win things.
“Cassano did very well against Malmo and he’s reaching a good physical condition. He just needs to stay calm because he doesn’t have any exams to pass here.”