Osimhen has scored many goals again. Calzona can make him to play comfortable again. It is different with Rudi Garcia and Mazzarri, Osimhen sometime played from the bench at that time. Now, the new coach make him to play always in the starting lineup. The new coach trusts him more, Osimhen deserves to play as the main striker of Napoli. With the support from the new coach, Osimhen seems to be motivated again.
If Napoli can play better and keep winning in the remaining matches, I think Napoli can finish in the top 5. They still has the chance to play in Europa League for the next season. But I think it won't be easy because they need to compete with AS Roma, Fiorentina, Atalanta, and Lazio. These teams also played quite well recently.
Yes, I hope this is very good news because after all, many people are looking forward to Victor Oshimen's performance like last season where he was able to create lots of goals for Napoli and bring Napoli to the title. But this is not because of Victor Oshimen's role alone, the role of the coach who improves the performance of the players also deserves appreciation, Spalleti was able to train Napoli with different characteristics and was able to make the club and all the players comfortable and able to work together well, but after Spalleti left the club the comfort started to be different and during the change of coaches there was no coach who could really provide performance the good one. Francesco Calzona will prove his abilities after being appointed by Napoli to replace Walter Mazzari. I hope his presence can make Napoli bounce back.
Of course that could happen to Napoli if they return to focus and are consistent in the remaining matches this season. If the clubs you mentioned above lose points in several matches then Napoli can catch up. Napoli's main focus at the moment is to be able to consistently achieve victory if they want to fight for competition in the Champions League or European League, but the most important thing is the Champions League. But yes, this is not an easy thing for Napoli to achieve, no matter what club you debut at above also wants such important competitions and to be in a good ranking.