I think he's a future star, or would have been here anyways. Who knows if he can fulfil his potential in Milan. That team is a dumpster fire.
It's only that I got rather bored of all the hyperbole surrounding him when we were selling him to Milan, people talking as though we were selling a superstar CB in his prime who was going to walk into our starting XI, as though we were downgrading the team by selling him.
It's unfortunate we sold him (necessary because of Higuain ), and Bonucci is a rather unlikable character, so the dislike for him is understandable, but Bonucci is an upgrade to our team, and our ability to control games... People should get over it and support Bonucci to return to the world class CB he was.
i think you can promote players from the B team to the A team any time. so with Spinazzolas injury in mind, we should have registered him for the B team, and when hes fully recovered, just promote him to the A team. that would have worked no doubt