Real Madrid, Juventus and Chelsea have been reportedly interested in the Italian. Gianluigi Donnarumma has been playing since 2015 for AC Milan and stays until summer 2018 at his club.
The 17-year-old has been linked with a move away from the club but Milan's CEO Adriano Galliani believes the youngster will stay at his club.
"You must be joking. Donnarumma is a Milan player," Galliani told 'Mediaset'.
"I hope and I'm convinced that he'll be a Milan player for many years to come.
"I think he'll be the heir to Buffon in the national team, though Buffon is still a great goalkeeper. Buffon has a contract with Juventus until 2018, he is doing very well," he said.