Leaving the price aside, the notion of adding another winger would at least kind of make sense if Willian played LW; considering we don't have a pure LW. Buying an expensive 30 year old to be an alternate to a 150 million euro winger you've bought is downright retarded. If you're going to spend that much money, by all means spend it on a LW. Unless Valverde plans to buy a player and play him out of position, AGAIN. Wouldn't seem surprising to me.
Besides, the fact is, the wing is not the biggest problem area; I'd say we are in dire need of a striker. So we need about 200+ million euros worth of choice on the right wing, but a washed up Suarez alone for a striker is good enough?
This Willian deal at anything over 30-40m makes absolutely no sense to anyone in their right mind.