Currently, Napoli must accept the results by firing Garcia and appointing Mazzarri to become Napoli's head coach. Unfortunately, with Mazzarri it looks like Napoli are getting even worse results and with that, then of course there is no good hope for Napoli this season, maybe also for all competitions, not just in Serie A.
this situation may impact several players who will leave the team. However, Napoli has players who last season were highly sought after by European clubs. and a performance like this might also cause dissatisfaction from the players on the team.
Mazzarri will need time to build this team to at least get better. they had high expectations for a new coach, and Garcia didn't deliver. and another mistake was when Garcia was substituted again after a short time. and it is possible that if Mazzarri does not make good progress at the end of the season, maybe they will get another new coach.
Don't they see how big teams grow strong and dominate in Europe? no coach is like a magician.