After making his debut at 16, the youngster is now the undisputed number one at the San Siro and is seen as one of the brightest talents in global football.
Having turned 18 last month, he is now entitled to sign a first professional contract but talks over a deal continue to stall due to the uncertainty over the ongoing takeover of the club.
A number of clubs are believed to be monitoring his situation, with Juventus thought to be especially keen as they start to plan for life without Gianluigi Buffon.
Donnarumma is keen to stay at the San Siro and is leaving talks in the hands of agent Mino Raiola.
"I hope to stay because they are AC Milan," he told reporters. "In terms of the renewal, my agent will take care of it."