PSG has everything to be attractive for recruiting players and also the PSG team has strong enough finances so I think that will be a consideration for Osimhen to choose PSG and also PSG's progress or targets are quite good so it is likely that the players will continue to improve.
After Mbappe's departure, PSG had to look for a suitable replacement and in my opinion Osimhen is the right player to fill the void.
Osimehn is a young and good striking player that can replace Mbappe and still be successful at PSG. But will PSG be willing to add him to their squad this upcoming season is the actual deal now? Getting another bigger offer from top teams like those in the premier league can make him change his mind to join them in order to show what he got in a more competitive league like the premier league. Every young players will like to play where they’ll be known and become more popular. Mbappe did do well in PSG all the years he has spent and also what helped him was how he took his country to two World Cup finals and won one of them, that alone was enough to make him as valuable as he is now. Osimehn cannot get that type of dominance even though he plays for PSG, so if gets a better offer where he’ll be more visible, he should better go for that one than coming to Ligue 1.