Well, Napoli cannot be classified as a bad team, they have an exceptional goalkeeper, the Colombian has many successful ones covering great players, it is a pity that for now he cannot do anything because his national team did not qualify for QATAR, but without a doubt he is a goalkeeper with great talents, it is presumed that Napoli is behind CR7 and if this turns out like this, in my personal opinion this team could be worth gold itself, in a team with CR7 at the helm and with a goalkeeper With that, they could easily get first in the scuddeto and apart from ensuring the classification of the UCL, the UCL is essential for CR7, that's why this team was able to get ahead.
I think they are not "bad" team, but they are certainly not at a level where they would fight for a championship, not at all. CR7 is just way to ogood to play in Napoli, I do not know where this gossip about ronaldo leaving started, but I am sure that he wouldn't be leaving for a team like that.
He would either go back to Juventus which I doubt, or could go to Bayern, or PSG for example depending on if those teams sell Lewandowski or Neymar. He is the type of player that should play in a good team, look at how great he played last season, he had hattricks, and he did bring them so many points. I believe he should stay, but if he doesn't, then Napoli is not the level of team he would be willing to drop to.