Maybe it is like the way you say about him. But I don't know. He doesn't feel like a big team player. It is better for him to play for average ones like Salzburg.
IDK for sure whether he deserves to play for a big club or not, as I said before he hasn't had much playing time so he can't show what his quality is. If AC Milan sells him, it would be a waste of talent, rather than selling him, it would be better to just loan him out. So far I heard several clubs want him, starting from Fenerbahce, Besktas (Süper Lig), Werder Bremen (Bundesliga), Flamengo (Campeonato Brasileiro Série A) to the last one is Bologna (Serie A).