Milan club president Silvio Berlusconi, however, has said that the Serie A giants would do their best to prevent their star asset from leaving.
Kaka, though, has not ruled out a move to Italy in the wake of the fresh speculation.
"I have a contract with Milan until 2011, I am not in a hurry to renew it and neither are Milan," Kaka told Italian media.
"Florentino Perez [Calderon] must talk with Berlusconi. If they find an agreement OK, otherwise I stay here."