I assume it has been a very long time since we last saw an Italian team in the Champions League finale. Now there is a huge chance for watching an Italian team there and that team are most likely to be Napoli of course.
There are 3 Italian teams in the current round, so it is true that the chance to see one of them in the final round is very high. I guess 2 of the Italian teams will be in the next round (semi-final). Napoli and Inter look strong enough to defeat their opponents, I assume these teams will have a chance to go to the final round. But the favorite team to play in the final should be Napoli.
We still don't know about what they can do against a tournament favourite like Manchester City, Real Madrid or Bayern Munich.
Napoli won't face Man City and Bayern Munich, one of these teams will be eliminated in the current round. But I think Napoli should have a chance to win against Man City or Bayern Munich. As long as Napoli can maintain their good performance, they even can win the title of UCL competition. Personally, I think the strongest opponent is Real Madrid if Real Madrid plays with a full team.