Rudi Garcia has been sacked, they called back Mazzarri after 10 years.
Conte is rumored to have refused them, twice.
Napoli must be realistic that they will not be able to defend their Scudetto title even if they keep their previous coach, who brought them to Scudetto last season, Luciano Spaletti. Sacking Rudi Garcia won't help Napoli to improve their performance too much and they have very little chance to defend the trophy. Because this season, Napoli no longer has a power of surprise like the past season. Inter Milan and Juventus will pay more attention on Napoli that reduce opportunities for Napoli to make another big surprise in the league.
And apart from home advantage, Juventus also has an advantage in terms of focus. Because Juventus is currently only focused on Serie A. So a less busy schedule can enable Juventus to be more optimal in competing in Serie A. That's why this season Juventus is really getting good results in Serie A. Because they are only focused on Serie A. But in January maybe Juventus will have another match in the Coppa Italia. But that's still a long time away.
Meanwhile, Inter Milan has another schedule after fighting Juventus, namely a match in the Champions League. So Inter Milan will definitely be more careful so that their core players don't get injured during the Serie A match. And it seems that currently more and more people are favoring Juventus for this match.
Juventus surely have more time for their players to recharge energy and recover fitness because they don't play in Champions League and no competition in Europe tournaments like either Europa or Conference League. With full focus on Serie A, Juventus have a very big advantage than Inter Milan and AC Milan. It's hard to say Juventus have best squad and player resource in Serie A but with less tasks to do in this season, they will have chance to do best in Serie A and take Scudetto after losing it to Inter Milan, AC Milan and Napoli last three seasons.