If they want to sell one of them I think it should be the other way round. I believe Trippier is a much better prospect than Aurier. He's improved a lot this season and his crossing is a lot better than Aurier. Southgate might even make him first choice over Walker at the WC.
Agreeded but Walker is the better full back, trips has by far the best delivery.
Aurier needs to be a lot better in defence and attack.