Yes, the only reason is because Napoli still hope that the price for Osimhen can really match their expectations, but in fact, both Chelsea and PSG have not yet negotiated according to Osimhen's lowest price target. Because this is also related to the calculation of the fee they will receive, Napoli don't want to suffer losses, but on the other hand, Osimhen is no longer like he was in the transfer market last season, who in fact used to be very popular and that's the term hype. This season, his performance is not as optimal as before, so, it is not easy for other clubs to want to negotiate Osimhen according to Napoli's request, it is still too high.
We all think that the price asked by Napoli is too high, I trust in Antonio Conte, a professional like that cannot be bossed around.
I am sure that he will lay down the law and will make sure to sell Victor Osimhen and take Romero Lukaku as part of his plans.
The market is still open, so it's not over yet.