It's true that Allegri is a good coach that can bring milan back to winning ways but the fact is that you don't expect things to change in Milan just like that because this current Milan team is lacking behind in quality in so many ways so Allegri focus should be getting a good team that can be competitive in the league
It is undeniable that Allegri is a very good coach and has high potential to develop a club. But here, at AC Milan with its current condition, I am sure that if their target for the 2025/2026 season is not directly to win Serie A, there will definitely be this target, but the most important thing is to return to the UCL qualification for the coming season. because AC Milan really failed last season which only finished in 8th place.
As for winning Serie A, this will be very challenging, they have tough rivals like Napoli and also Inter Milan who are still that good in their current development. As for now, they have just managed to sign 1 player Samuele Ricci. We have to see other players who have been successfully signed because Allegru really has to rebuild the club much better.