"In Milan players only had to think about playing football, behind us was an organization that thought of everything else. If I left Milanello this is also a reason for the failures," he told Radio Monte Carlo.
Gattuso also slaughtered M'Baye Niang over his antics.
"He's very good, but every day something happens with him. A few years ago, Milan would never have made the mistake of taking a player like that."