He's 21 and if he were that good like you describe him every other big club would try to sign him and not to forget you can't shine in Milan as a player anymore. Just look how poor Andre Silva played in Milan and how good he is now in Sevilla.
you're saying that milan isn't a big club ????????? even tho they're struggling the last years, they're surely a top EU team .
Btw, Barcelona, Manchester City and United already attempted to sign him
Milan is for sure not a big club anymore compared to Barca, Real, Bayern, Atl. Madrid, City etc.
And stop beleiving every fake news. Barca and City never wanted/needed him. Just look or read what the managers said about all this rumors.
And I'll write it again "are you stupid to understand it"? So you prefer to believe "The Sun" and other sites which like to bring fake rumors instead of believing what the coach said? Pep Guardiola himself said that he doesn't need new players in this position. And Barca just wanted Arthur and Vidal.