Not a good signin from Ac Milan you know. Allegri's era already passed. I'm seeing him as a gamble from Milan. He is a coach with very slow gameplay, and expect his club to play boring and slowly. We will be back to the era when Milan always played defensively without even being offensive.
Finally, the parking bus era for Milan is back again.
It can't be concluded too quickly because however Massimiliano Allegri is a very experienced coach so there is a possibility for Massimiliano Allegri to make AC Milan better with the experience that Massimiliano Allegri has.
AC Milan was quite down last season so if they really want to rise of course they have to make a big overhaul, not only bringing in a new coach but AC Milan management also has to bring in quality players otherwise I think it will be difficult for Massimiliano Allegri to be able to build a team.
He's experienced coach, but his gameplay never changed. I watched when he was in Milan more than a decade ago, until they got sacked by Juventus. That's why i believe nothing change with his team's gameplay even after he backs to his old days club.