The manager insisted the reported Juventus, Real Madrid and Manchester United target is an important player at the San Siro
Vincenzo Montella remains hopeful AC Milan goalkeeper Gianluigi Donnarumma will sign a contract extension, having initially declined a renewal.
It has been chaotic since Donnarumma announced he will not be signing a new contract, with his current deal set to expire in 2018.
Amid the back-and-forth between the club and agent Mino Raiola, the 18-year-old sensation appeared to pledge he would hold fresh talks with Milan via Instagram before claiming his social media account was hacked on Sunday.