Last season Napoli looked very strong but lost to Madrid. This season maybe their conditions are quite the same. Napoli don't look like last season. Madrid are the same, at the moment they are not in so good condition after several main players were injured. Supposedly with conditions like this Napoli should be able to get at least 1 point. Last season's statistics will not have much influence for the time being. Because football is always difficult to determine the final result.
Now Napoli is a bit down in the Serie A league, while in the Champions League we are still a little doubtful that it will win against Real Madrid despite playing at home, some news that Real Madrid's main players are ready for this match but there is a possibility that Ancelotti changes the formation scheme but it will be a little difficult for Napoli that's what I expect.
Odds are not much different, a little confused if you choose between 1X2 bets other options are better because this match will probably have stronger attacks from both sides but we are difficult to guess who wins.