Most importantly, he can still score goals even when he's playing like shit. He doesn't panic in front of goal, and even on his worst days if you give him the ball a couple times he'll find the back of the net. This is something that United never fails to do. They're always able to create chances against any team, even if it's just by pummeling them from the wings until one ball gets through.
He can be appallingly bad, yes, but a player who gets you points by getting you winning goals as often as Rooney does has to be highly valued.
(JuveGAF)
