He was quite good for his first season here, he had okay-ish stats. Not too many players were sold after their first season here, especially after contributing at least something. Also, we were total shit that year as we ended 7th, but you can't say Diego had some support by other players. We still had Legro, Grygera, Molinaro, Iaquinta, Amauri and others. He was actually one of the few players who showed something on the field in that season. So yeah, really.
And no, I'm not saying that because Atletico reached this far, nor because he scored that screamer. I just think he's a decent player and if anything I think he deserved one more season here.