 Complete the following phrase:  Originally a Milan youth squad product, Maldini also went on to play his entire club career with the Milan senior side. He won the Coppa Italia Primavera with the Milan Youth side during the 198485 season, and he made his league debut for Milan under manager Nils Liedholm during the same season on 20 January 1985, replacing the injured Sergio Battistini in a match against Udinese at age 16. It was his only league appearance of the campaign, but he was immediately made a member of the starting eleven the 