Napoli is playing an amazing season. There is no need to think twice when they have a two goal lead. The game is over and they will patiently take it home. This is what they did this time and what they will do next time.
Napoli are just waiting for the end of this season, because there is no chance for other clubs to catch up, because Napoli have had the upper hand in several matches that Napoli has played, always showing positive values and always winning over their opponents, Napoli ended this season well even though they are still running, but the Serie A League has already appointed who will come out as Champion this season, so this will be the championship that the people of Napoli have been waiting for.
I think it's already on offices and not on the field part of the club. What I mean is that they are probably trying to find which of their players could be sold for how much, and for that much money who they could get.
To be fair you could spend 10-20 million euro and get a good striker, not an amazing one but good enough, and for 100 million you could build a team for Serie A that could be going to UCL (top 4 I think) and that is what they will get, more than that money. So right now, they are basically calling up every team and learning what's the offer for their players and calling other teams to learn who they could get for cheaper and all that, because this year is already over.