Oscar is indeed special, but it is evident he's still getting used to the EPL. He hasn't been able to dominate but he's not really ever been bad either. Needs to bulk up a tad, but the skill, desire and work rate is there. He works a hell of a lot harder to track back and put in the tackle than a lot of attacking midfielders, especially Brazilian ones. You can see he's the type of player that will take a few years to really become a top player but all in all I'm confident it'll end up being money well spent.
He's usually boss for Brazil though. No adjusting needed there!