Well, I'm also curious about what will happen to Napoli after Spalletti leaves the Napoli coaching bench. But if it turns out that Napoli can still be a strong team next season. so of course this is great news for Napoli fans. but if Napoli were a weaker team then of course many would regret the departure of Spalletti and several of Napoli's mainstay players.
It is true that Spalletti will go very likely. He wasn't willing to give any affirmation regarding his stay in Napoli and it seems that he has issues with his president as well.
But when you think about how strong a team Napoli will be next season, it is difficult to know that right now. Whenever a team like Napoli wins a championship, it is quite normal that they are scrutinized thoroughly for the strength of their players and there will also be offers. How many players they can keep or convince to stay in Napoli isn't known yet. Spalletti could have offers already because a coach who leads a team so good for so long during a season is also on the radar.