It is still too early because if you look at the previous season who would have thought Inter Milan and PSG would enter the final, but the fact is that they worked hard to be the best until PSG managed to come out as champions. Napoli is one of the Italian representatives who may be much more prepared compared to other teams and if you look at the quality of the senior players they have brought in now it will give them a chance to compete in the Champions League. But this is not enough because the Champions League is known to be quite competitive and sometimes the quality and mentality of the players greatly influences in facing certain matches.
Now it is still too early to say anything about any team because in the Champions League there is always a difference between last season and the coming season. And for the Napoli, Inter Milan and PSG teams they will also try to make themselves superior in the Champions League even though the other opponents will do the same. Because this is a League with real tension so that the mentality and quality of the players are really tested here and any team must have the best players for each line in order to become stronger.