I think he was one of the strangest signings Wenger has made.
If he was cheap, then I could see that taking a punt on a striker was a decision that made some sense, or If he was a young prospect, I would say the same but Perez was neither.
He is an experienced player, playing in a good league that was in his prime.
For Wenger to part with 17m meant he must have rated him, yet, like Xhaka who cost nearly double that, he prefers other options.
As much as I wanted Wenger to buy a top quality striker, or winger, I would rather he had bought no one, and saved the money for when he did eventually go big on that sort of player.