Several top clubs (literally all) are currently interested in signing Osimhen and have been linked with transfer speculations indicating a high level of interest in the player.
The list of club goes on…
- Manchester United
- Real Madrid
- Arsenal
- Chelsea
- Saudi Pro League clubs
- Tottenham Hotspur
- Newcastle
- Juventus
- PSG
- Bayern Munich
- Manchester City
He however clearly doesn’t seem interested in Saudi Pro League after his recent remarks. 
I think Arsenal and Chelsea could lead the race, based on speculative interests in the media. However, I would love to see him at Man United too.