The teenager has attracted interest from the likes of Chelsea and Manchester United, but the Rossoneri supermo says he is to be the foundation of his future plans
Silvio Berlusconi insists AC Milan goalkeeper Gianluigi Donnarumma is not for sale, despite interest from top clubs, with the president confident the teenager will remain at the San Siro outfit for the next 20 years.
Donnarumma has taken Serie A by storm, becoming Milan's undisputed No.1 at 16 years old, relegating Diego Lopez to the bench.
The youngster's exploits have caught the attention of some of Europe's biggest clubs, with Chelsea and Manchester United reportedly interested.
But Berlusconi plans to build Milan around the Italy youth international.
"Donnarumma is 16 years old, he is admired by all and he won't leave Milan, whatever offer might come in," Berlusconi told Premium Sport .
"He will be the Milan goalkeeper for the next 20 years. He is a good lad, very strong physically, mentally and in terms of his character.
"I think he can be a Milan star of the future."
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Berlusconi, whose Milan are sixth in the Serie A table, added: "I hope Milan can bounce back. No team can always win.
"Cycles come to an end. We are rebuilding with a team made up of Italian players; it bothers me to see big sides without Italians.
"I would like to see an all-Italian Milan. We have an all-Italian defence and midfield, we are just missing the forwards.
"What's more, we are relying on youth: there are six now with the arrival of [Manuel] Locatelli, I see the new [Andrea] Pirlo in him. He is a bright playmaker."