Everyone has the chance to choose whichever team he feels that can finish on top four on the table next season based on their own assessment and understanding. However, that doesn't mean that their predictions will play out exactly as predicted. I also don't see Milan finishing on second position next season. The new coach needs time to fix the team.
I even still favor Inter Milan to finish second or even win the Serie A title next season if their consistency remains strong since the start of the season. As for AC Milan, I think they might only be able to finish in the top five because Milan still needs to make changes and also needs some great players to further strengthen their team. Napoli and Inter Milan will likely still be strong contenders for the Serie A trophy next season, although several other teams, such as Roma and Juventus, should also be considered.
AC Milan did quite badly in the previous season, but I think for this season they can perform better. A fairly busy schedule is one of the reasons why AC Milan's performance in the previous season was inconsistent, but for this season they have matches that are not dense enough because they do not have matches in any European competition so their focus will not be diverted other than on matches in the domestic league.
We've seen Napoli win the Scudeeto again, and that's because their focus is entirely on Serie A matches. So I think that maybe the same thing will also happen to AC Milan.