So much facepalm in this post.
I don't think anyone is saying we base our choice of AMs simply on their defensive contribution, but for our (very succesful) style of play it is vital that they do contribute defensively and work hard throughout the game.
Even if we did want a lazy AM who's not contributing defensively, I don't think we'd go for one who also contributes less offensively than what those we already have does.
3 goals and 6 assists in 1850 minutes and no defensive contribution at all?
Pass.
You're also forgetting any possible influence poch's coaching could have had on him. I'm not saying he's a world beater. But I am saying he is better than any back up we have for lamela currently and he also would have cost less than half a saido berahino