I think you've answered your own question. No prem club is gonna spend £25m for 'one for the future'. He goes for that fee then he's immediately on the bench for a top 6 team or starting for anybody else.
Fwiw I think the whole of the prem is watching him and are waiting for the season to finish to confirm whether or not he can put in an 8 out 10 performance most games. He carries on playing like today then there will be a bidding war like we've not seen before at this club.