While Osimhen is still out on his national duty Napoli are going to host Verona in two days. I'm still hoping to see a win of course. The problem so far is that they can't score a lot of goals while conceding quite many. Maybe Verona can also score against them so my expectation is like Napoli to win by 2-1.
Verona will be easy opponent. Napoli will able to get full points against it and im sure that if napoli will not try to miss three points. Napoli likes lose its ability to score as many as possible like last season. This time napoli just like a toothless club. It was unable to make the situation even better caused by osimhen and kvarat have lost their instinct to perform better.
In fact, napoli has been trying so hard to perform better but due to the various factors and the club is still stuck in the same place. Im concerning about the performance from the club. Napoli is not the same like previous seaosn.
We may be seeing another decline to happen with napoli. The club must have faced some strong clubs. I think that napoli can also go out from UCL very soon. Barcelona will be the biggest obstacles for napoli in the nex game.
After the point loss against Lazio this game is like an opportunity for Napoli to start winning again. But I don't know what they can do against Milan after this game. Especially if Osimhen is still with his national team on that date they can have serious difficulties against Milan. 
At least the won against verona will be also making napoli to have self confidence to win the upcoming games. Napoli's current performance is not up to par, and they believe that now is the perfect opportunity to demonstrate any improvements the club has made to the public.
Mazzarri shall not make another mistake again. It will be also helping the club to put all of its focus to win against verona. The upcoming game will not be a hard game and i think this is a very good time for napoli to get three points again.
Osimhen needs to improve himself in this game. It's important to have him back to the his best performance caused by the match against barcelona will be around 2 weeks from now.