Gianluigi Donnarumma has informed AC Milan that he will not be extending his contract with the Serie A club, which could lead to a transfer this summer.

"Mino Raiola has told me Donnarumma's decision not to extend [his contract]," Fassone told reporters outside Casa Milan, reports La Gazzetta dello Sport. "The decision is final."

Donnarumma, 18, is signed until 2018.