I'm sure the link is dubious anyway, but I wouldn't get the point in selling Demarai to be honest. Sure it's profit, but what are you going to do with that profit? You'd just have to replace his production with a player that would end up costing at least what you could sell him for. Inconsistent player who should be an impact sub, but a good player to have in your team. Also happens to be the best dead ball specialist at the club (which is an area that obviously needs improving).
The goal should be to have him and Gordon as rotational options rather than foundational pieces. I also doubt there's really anybody all that interested unless we're selling for change.