It's still uncertain who will be the favorite for next season, given all the improvements each candidate has made. It's unclear whether they'll improve or decline, honestly though, Napoli looks more promising to me because Conte is still in charge, so he just needs to address last season shortcomings. Inter shouldn't be underestimated but under a new coach they'll certainly have some adjustments to make especially given Chivu lack of experience. For more clarity we'll have to watch their last four or five Serie A matches to get a better idea.
Before the season starts and before we've seen a few matches, we won't be able to make a good assessment. But for now, we can only judge based on their movements in the transfer market, and their recent performance at the end of last season. Coaching changes and the coach's experience or history can also be factors in assessing a club. However, that still doesn't guarantee a definitive outcome.
So, we'll have to see a few matches before the season starts. Napoli, however, looks promising. Besides not changing coaches, the team has also brought in several highly reliable players who will improve the team's strength.
By the way, I haven't found out much about Victor Osimhen in the current transfer market. Have there been any developments? The latest news is that Galatasaray is ready to buy Osimhen from Napoli. But I haven't read the latest news. Does anyone know?