I bought him in my Arsenal file 2nd/3rd season (can't remember which) as I was looking for someone to rotate AML/AMC (I have Ozil & El Shaawary 1st choice) for. He's good, especially as an Inside Forward, but the only concern I have of his is that his stat's blow a bit hot & cold.
I mean, they're very susceptible to change. One minute he'll have 15/16/17's in all the sort of stats you'd expect, and then they might drop a point or two due to him underperforming in training. Definitely one you have to kick up the *** every once in a while to keep him at 100%.