I think he's playing well at the moment, but he's also mainly multiplying the good or improved form of the players around him.
He's been looking a lot better since Coquelin came on, Cazorla lifted, Giroud's hot(ish) streak, etc.
He's a great asset, and works quite tirelessly—you should pay your respects to him for that at least Biggus. Compared to United we're packed with ideas.