Lisandro Martinez transferred from Ajax to United and he’s on 7m a year. Koulibaly is on 17m a year, Fofana who went from Leicester to Chelsea is on 12m a year. They would easily offer Bastoni 8mWhy would he? I hope he likes it in Milano too much so he's not gonna go abroad to earn that kind of money.
Realistically only PSG could PERHAPS offer such contract but I doubt given they would have to buy him. EPL clubs won't offer such salary to Bastoni. He's not a star player in their perspective.