What a sad fate for Osimhen. Napoli no longer wants him, but strangely they always seem to prevent Osimhen from leaving there permanently. Therefore Osimhen has become a loan player for any club that needs him, as long as they are willing to pay his salary. I don't think Napoli can continue to act like that because when the contract ends, Osimhen will be free to go anywhere, and his new team will get him for free.
Mateo Retegui is a player who has promised, so if Arsenal really wants a cheaper striker then he could be a good option. But if they still want to sign Osimhen, then Arsenal will have to come back with more money or be patient for another 2 years until Osimhen's contract ends, but there is a possibility that Osimhen could join another club that can reach an agreement with Napoli.
I am sure Napoli will not let Osimhen go as a free player, it is also likely that Osimhen will not be loaned again after his loan period ends at Galatasaray. which means, Napoli will try to release him in the summer transfer window. yes, they will inevitably have to lower his transfer price. if not like in the last summer transfer window, not many teams are serious about bringing him in with the transfer clause value desired by Napoli. honestly, I'm not sure Arsenal will be interested in Osimhen again. especially if Napoli makes it difficult to release this Nigerian international player. but I hope Arteta brings him to the Emirates Stadium, because after all Osimhen is one of the strikers who has above average quality. but I suspect, if in the end Osimhen will be interested again by Paris Saint-Germains. moreover, they seem to really need a player who can be a reliable goal scorer. well, we'll just see, right now Osimhen is definitely more focused on Galatasaray, especially improving his performance to achieve his best game again.