It seems like you missed the season before Lukaku joined Napoli because Osimhen had been at odds with the coach ever since which cost him his place in the first team.
It’s been almost three seasons since Osimhen said he wanted to leave Napoli but never reached an agreement so he was only loaned out.
This situation will not benefit Napoli when his contract expires so it would be right for Osimhen to be released to another club.
Several teams have been calling for his services but have not reached an agreement so far and I think this should be a consideration for both Napoli and Osimhen himself.
Victor Osimhen's contract with Napoli is until next season, so indeed with the dispute with Conte since the beginning of Conte's arrival as Napoli coach, the two did not have a harmonious relationship, so it was only right for Napoli to sell him, but now there are several problems, namely transfer fee constraints and also salary, but whatever it is, to cover next season, Victor Osimhen must get a new team because he no longer has a place at Napoli.
No!! @tottong has explained that the rift had already started before Conte arrived and besides since Conte arrived he wanted to give Osimhen a chance but because of the rift with the management Conte chose the safe path with Lukaku. Napoli will lose if they don't sell Osimhen this year and therefore they have to lower their price tag but I think it's too late, the Premier League clubs will probably wait until next year, waiting for Osimhen as a free agent. I think this has been planned by Osimhen and his agent because if he really wants to leave as soon as possible then he will also lower his high salary demands.