To be fair Milan definitely got a managerial upgrade, there is no doubt that they are going to do better than what Pioli showed so far, there isn't really any doubt about that. But, the question in minds right now is that if it's enough? I mean sure lets say that manager is good enough to make a team champions, but you can't make Monza the champions, that's not going to happen right?
There are only a set amount of teams that could do that, and Inter is doing great so far, hell even Juventus is doing fine, do we know if Milan has the squad to win the title or not? Manager could be as great as it gets, but if there is another team that plays amazingly well, then the manager doesn't matter. That's what we need to see this season.
If a team wants to achieve maximum glory, what is needed is good management, a qualified squad composition and good relationships between the club, coach and players. And we can see all of this at Inter Milan in the last few seasons. And I think AC Milan will also be able to do it this season. Because AC Milan has also tried well to improve their squad by taking advantage of the current player transfer window. It's just that one thing we may not be able to confirm is whether the current coach will be able to build good chemistry between the players in the main squad. Because this is also very important to enable all players to play more optimally.