IMO he is much better player then Perez. Don't get me wrong , Perez is a hard worker and all, but he's does a horrible job on the wing, there is a reason why he is our most substituted player. Most of his goals and assists came from a CF or CAM position which suits him better. I think Perez gets more first team action because we're obligated by contract and nothing more. If Demarai will get that much amount of playtime he'll be much more effective than Perez. Off course signing Ünder will make both go down the pecking order, but it will surely show how bad we had it with Perez.