IMO it is handball. However, the way the law is written, it is not handball. The ball was struck from close range and he couldn't get his arm out of the way so the referee was right not to give it under the law as it is. However I think it should be changed. United gained a big advantage from it and went on to score. The handball really doesn't do referees any favours at all. What looks an obvious handball from replays actually jsn't because of the way the law is.
That arm that was moving up towards the ball?

