I think Napoli can have a good chance to score a goal in this game if they have Osimhen in the good form because the defenders of Barcelona have not performed well recently.
Barcelona are a bit off form right now it's true. However, I think Barcelona can do well against Napoli. Because the performance of the Napoli team is not good this season. They are not able to dominate in Serie A. The team has won only 8 out of 16 matches in Serie A. If they are in good form like they were last season I would definitely consider Napoli favorites against Barcelona. But since the performance of Napoli players is also completely erratic. Especially the team's defense is quite weak. For these reasons, I will call Barcelona the favorite for this match. Barcelona's squad looks stronger than Napoli's to me.