Kaka is becoming fed-up at Real Madrid under coach Jose Mourinho, it is claimed.
Sport and El Pais say Kaka has complained to president Florentino Perez over his treatment by Mourinho and is already planning a move away this summer.
Kaka has been stood down by Mourinho in the last week, concerned he still was struggling - mentally and physically - to return to his best after long-term injury.
The Brazilian knows while Mourinho is in charge, he will always be playing second fiddle to the likes of Cristiano Ronaldo and Mesut Ozil.
Kaka has offers from Chelsea and Manchester City, but favours a return to AC Milan. Dad, Bosco Leite, was in Milan last week and refused to rule out a return for his son.