Fair enough but what if Benteke wants out too? Which wouldn't surprise me since he could do a lot better than them and would probably stand more of a chance in the Belgium squad at a better team.
I was exaggerating but Lukaku has brilliant potential and will be twice the player Benteke is. I don't think he'll cost £25m, probably somewhere closer to what BMG suggested, or a bit more. £15-20m I'd guess.
Last summer Benteke wanted out and handed in a transfer request, what happened? Ended up retracting the transfer request and signed a new contract!
Villa would be nothing without Benteke, so they will hang on to him no matter what, unless they get a big bid that can really tempt them into submission.