If he plays well, and got noticed by the top clubs, being offered a lucrative contract, why would he stay here?
If he doesn't play well, he could still join those clubs by asking for lower wages.
That's why in my opinion 'he's absolutely set on leaving no matter what", and we should sell him ASAP --- but unfortunately we can't find a buyer and he may not agree to move.
Yes, very true, I thought that as I was posting actually. I guess one possibility is that he becomes genuinely attached to his new better teammates and wants to carry on the NUFC project. I know that's unlikely in modern football.
If he gets a Spain call up then maybe the bigger club thing won't be so important. Again, a big assumption.