Indeed, judging by the news, Galatasaray is clearly the frontrunner to acquire Osimhen, as Galatasaray's new proposal is likely to be approved by Napoli today. Premier League clubs have withdrawn from the pursuit of Osimhen due to high asking price.
Galatasaray are indeed the top club in the pursuit of osimhen because the former clubs on the race are no more in bid for osimhen right now. The high asking price for osimhen by Napoli is the prior reason why many premier league clubs withdrawn from the pursuit of the player, osimhen recently rejected the Saudi offer and it seems like Napoli likes him to move to Saudi and the player still wants to be in Europe.
Well the osimhen transfer saga is currently one of the most controversial transfer clause in the transfer window this season.