Osimhen last season was quite down compared to before and Osimhen is not a suitable replacement to replace Mbappe, especially at a fairly expensive price, and does not match his performance this season.
For PSG, of course money is not an obstacle for them, but they are also thinking about not wasting money on unreliable players, because Osimhen's performance has declined this season, it would be good for PSG to think about making an offer to Julián Álvarez because his performance was superior to Osimhen.
Coming to a perfect distinction for which will be seen as proper to distinguish a player from another is something that may never be really achieved if we choose to ply the path of player comparison especially in cases such as this, osimhen at Napoli and mbappe at PSG, for me are like two different worlds apart, we may want to say they are still in Europe but these two players may be having different experience at a time.
Sometimes there mey be factors that may be playing out around a particular team that is providing a player with a particular edge up on which they strive while with another, it may be them having to strive all alone and sometimes be the one upon which the team depends and in both scenero, you will agree with me that both players have been of Great benefits and importance to their teams in their own capacity, in my personal opinion, mbappe have been loved at PSG and give all the support to thrive but it's not absolutely same with osimhen at Napoli.
In the first season when osimhen help Napoli win a trophy , he was see as a god, he was loved and was really admired by most of the fans and even the team, this season that just ended, it happened that an issuee came up that affects osimhens performance which led him almost leaving before the end of the season but on a second taught he stayed till the end of the season but then the enabling environment to thrive wasn't there anymore. Conclusively he could be a good replacement for mbappe if he gets to PSG and he's provided with the environment that supports him to thrive there.