Former juventus player completes a €40m move to Milan and would become club captain next season.
The defender arrived to complete his move from Juventus to AC Milan after being satisfied with agreement.
Milan have made some decent signings this season and fans expect them to challenge for honours next season.
Bonucci had a fantastic season helping Juventus win the double and going far in the champions league.
The Italian becomes Milan’s ninth signing of the season in which it has been a very busy summer for the club.