Gianluigi Donnarumma has been ruled out of AC Milan's Coppa Italia meeting with rivals Inter, the Rossoneri have confirmed.
The goalkeeper has suffered a groin injury and has been taken out of Gennaro Gattuso's squad for Wednesday's quarter-final clash at San Siro.
"Gigio Donnarumma has been removed from the #DerbyMilano squad list and is undergoing medical examination," Milan confirmed on Twitter.
"#MilanPrimavera goalkeeper Matteo Soncin has been added to the list."
Donnarumma, on 99 appearances for Milan, will have to wait for his landmark outing with a trip to Fiorentina looming on Saturday before a home game with Crotone on January 6.