One thing I know he would struggle with at the club is the number of players there, personally I think he needs to do a squad overhaul, flush out many players and bring in few ones and simply concentrate on the league
If AC Milan's new coach can bring changes to the team, it is believed that it will definitely help them because as far as I know Allegri has been appointed to this team for the second time. Earlier this manager had given AC Millan a league title that it may seem that his experience is much higher. Since Allegri has already taken charge of the team, so it is somewhat true that AC Milan might regain their former glory.
As you mentioned Allegris dismissals at Juventus was surprising, in fact he lost his temper in that Coppa Italia final. AC Milan did not win the championship last season, but they occupied an important position, so we think this new coach will help them take it to an important position again.
Yes this is absolutely true but their players themselves should also improve so that they can be skill and win the match. If they do not improve then they will have to lose to weaker teams and weaken their standards. If the team players cannot do anything then they do not benefit from the coach's hard work and experience. I believe that without the coach we are nothing but it depends most on the players of our team how they play. If they work hard then many people also want AC Milan to improve and make their comeback.
If AC Milan had remain strong we could have seen them truly succeed, but they have not succeeded in any way and have gradually become weaker and weaker and this year hard work efforts and hopes have been wasted at their hands but they have not lost courage and have to continue playing with hard work.