With Europe's biggest clubs circling, AC Milan are putting pressure on Gigio Donnarumma to sign a new contract.

The 18-year-old goalkeeper is out of contract at the San Siro next summer and has yet to agree an extension.

Manchester United and Manchester City are just two of Europe's big guns who are monitoring the star's situation at the Rossoneri. Real Madrid are another watching developments closely.

Milan general director Marco Fassone told Sportmediaset: “Donnarumma is a cornerstone and a foundation for next season. We have told him this right from the first time we met for talks.

“I can see a willingness to stay in his eyes, but we cannot afford to just sit back and wait for him to make a decision.

“We need to give Vincenzo Montella his squad for next season on July 3.

“Our time is more pressing than that of his agent Mino Raiola."

He added: “We need to know if we still have a goalkeeper, whether he will leave or whether we will have a goalkeeper with an expiring contract.

“No club would leave a goalkeeper like Donnarumma in the stands, but we cannot have a goalkeeper with an expiring contract.

“I am convinced that our offer and our plans with him are good, but we will have to activate a back-up plan if he does not want to renew."