Just as Hansi flick transformed Barcelona with the available players in his squad last season, I think Allegri can try also since he already have the Seria A experience, and he is a good manager overall.
Transformed....
Barcelona were winning La Liga even before, and they won it even easier in the 2022 edition before Flick, Milan is all over the place, before winning Serie A they spent 7 years not reaching the 4th place, and nowadays their game is simply chaos. Barcelona always had the players to win La Liga, they were always there, Milan even when winning it!
The only advantage Milan has and that makes a comeback somewhat a possibility and not straight fantasy material, is that the other teams suck just as much, there is simply no other team that can say for sure they are favorites and will not flop again like they used to, every single one of them.
Flick took advantage of a golden generation at La Masia and a board finally desperate enough to gamble on youth, high pressing, and all-out vertical play. He amplified what was already there, sure, but even he benefited from the fact that Real and Atleti have not really upped their game post-pandemic. Barcelona hegemony is structural: a team worth more than €1B, 66% possession, and a youth academy that can replace the next injury epidemic that is bound to come
Milan is different. Since 2014, they have gone through 10 managers in 11 years and had exactly one season where anything clicked. Allegri coming back is not revolutionary, just damage control. But I do agree: the one thing Milan has going for it is that nobody in Serie A scares you anymore. Napoli wins with a points total that would barely get you in the Champions League in Spain. The ownership of Inter has defaulted on a loan of €395m. Juve is in a crisis. Milan does not have to be amazing, just less dysfunctional than the next guy