Monreal is good to average with a poor end product, he seldom finds another Arsenal player in the box.
Watch him in the next game and tell me if I'm wrong, he's wastes so many chances down the left hand side.
The problem is there usually isn't any one there in the box.
Unless Giroud is playing.
but I noticed last night when he is overlapping with Sanchez it's a bit confusing and he seems to look for him most of the time. I think it distracts him.