Has a lot to do with 2 main factors:Offered more money to the player perhaps, but it was a nominal fee to the academy. I read £250k or thereabouts a while ago. Basically he cost nothing (which begs the question how do the rules permit that his academy ended up losing this player for so little?).
1. Most Nigerians are extremely terrible at negotiations especially with Europeans (it's embarrassing tbh)
2. He plays for an Academy and not an actual professional club, so he's not exactly proven like say if he was a Brazillian and regular for a team like Santos