I remember Fabinho coming on as a sub for Real Madrid under Mourinho and being highly rated and never seen him since. I see people saying about our defensive record last season. For me that had little to do with a great defence though and more to do with the magic of De Gea and also the soul less possesion football and defensive mentality that we had. SMalling aside who was the one player who really improved under Van Gaal for me, once Shaw got injured our defence looked vulnerable for the rest of the season for me.
I had never heard of Darmian before we signed him but was pretty impressed with him the first two months. Then there were a couple of games he got absolutely battered by a couple of pacey players and he looked shot of any confidence at all, he does look like he cant handle pace to me. Valencia has been ok as a right back, though his positioning is pretty awful. Personally bar the one season he has never been that good for us anyway, for a player with such pace he is surprisingly just functional and after that one great season how did he suddenly lose the ability to cross the ball over night?
Saying that do we need a right back for sure this season as both are still adequate and we do have others that can play there as well. I would still rather sign a centre back, defensive midfielder or right winger over a right back this season, though I have no idea how good Fabinho is as only seen him for about 15mins a few years ago.