Welcome to LIVE coverage of Manchester United v Arsenal in the Premier League from Old Trafford!

And that's full-time. Poor from Arsenal for well over half the game, but their tenacity was rewarded with the enforced errors from Blackett and Valdes. Now, what of David de Gea's future? Thanks for joining me this afternoon.

A booking for Herrera, clipping Flamini on the halfway line - the first yellow card of the game.

Five minutes to be added on.

Final Arsenal substitution, Flamini coming on for the unusually muted Sanchez.

Optimistic ball forward by Coquelin towards absolutely nobody who's onside.

Chance for van Persie! Fellaini knocks it down to him in the middle, but he's falling backwards and that's well over the bar.

Arsenal fans are singing about Wembley again.

Arsenal really fancy this now - Giroud shoots into the side-netting and they're really pressing with this rejigged line-up.

GOAL! What a horror! Great pass from Ramsey to Walcott, who gets his shot off, deflects it off Blackett's boot, but Valdes has already made his move and can't get anything to the ball.

United would be happy to run the clock down now.

A run forward from Valencia, but Koscielny clears his attempted ball in.

Another good run down the left side from Ashley Young, looking for van Persie, but blocked and out for a corner.

Walcott's first contribution this afternoon is being flagged offside.

Unsurprisingly, Arsenal fans are whistling as the goalkeepers take their time swapping over. United fans are cheering de Gea.

All rather confusing now - Blackett comes on for Rojo, but de Gea's picked up a knock and so Valdes will have to hurry up and get on as soon as possible.