Yes, Juventus and Milan are both experiencing a decline caused by several internal conditions that are being faced. Juventus, who have always been the favorites for the scudetto, have experienced a fairly rapid decline and since being handled by Motta, the situation has not changed. Meanwhile, Rossoneri are also struggling to improve themselves with their new coach, Concecaio, who is trying to put together a team in order to bring his team to be able to compete at the top. I admit that even though their mission is difficult, there is certainly still hope and the competition in Serie A this season is very fierce.
I don't think Juventus and AC Milan will be able to win the Serie A title this season. They are already far behind. Juventus are 16 points behind Napoli. It is not possible to close such a big gap. AC Milan and Juventus also have very little chance of qualifying for the Champions League.
I don't consider Juventus as favourites for the title this season. Juventus' performance was not good last season either. Even then, they were third in the table. We don't see any improvement in Juventus' performance this season. On the contrary, Juventus' performance is even weaker this season. It is not possible for Juventus to win the title unless they strengthen their squad.