Really?
That's like us selling Luiz and Kamara this Summer.
Palace will only sell either at an astronomically high price (£50m+) and whilst I rate both, I don't think we're in a position to spend that sum of money yet on a single player, and I'm not sure it would be sensible to either.
I can see us doing most of our shopping in Spain/Portugal this summer, Guendouzi aside but regardless, there is so much better value abroad than trying to buy our rivals best players.
FWIW, if money were no object, I'd have both. I think both are fantastic players with bags of potential.