Why? I think it’s clear from the players we are targeting that we want to play considerably more often with wing backs instead of wingers. Cancelo and Angelino, added to Mendy, gives us that possibility. Plus, Sané is only our 3rd choice winger, so the change is to give more minutes to Mahrez and a change tactically to let Mendy/Angelino/Cancelo be the width more often. If we are wanting to play with wing backs more than we do currently, we should not be worried about losing a winger and gaining a wing back. If anything it gives us more flexibility.