he was engulfed by his jubilant team-mates.
Van Persie went close to doubling his and United’s tally on 21 minutes when Rooney put him through. This time the Dutch forward saw his angled effort palmed away by the Gunners' Italian goalkeeper Vito Mannone.
Arsenal went straight up the other end and forced David De Gea into action for the first time in the game with the Spaniard diving down low to punch away Aaron Ramey’s dangerous cross from the right.
United were looking rampant in attack and soon after Rooney, well found by Michael Carrick, saw a drilled shot from inside the box brilliantly saved by Mannone, and in the passage of play that followed van Persie headed Young’s centre straight at the Gunners stopper.
While Arsenal had offered little from open play, they found themselves with a good opportunity from a corner seven minutes before the break, but it was wasted by the unmarked Olivier Giroud who powered a header over De Gea’s crossbar as he rose to meet Cazorla’s set-piece.
Cazorla was involved at the other end on the stroke of half-time when he was penalised for handling Young’s cross inside the box. Referee Mike Dean had no hesitation in pointing to the spot, but Rooney wasted the opportunity as he fired his penalty wide of Mannone’s right-hand post.
Another poor miss from the Reds followed almost immediately after the restart. Vermaelen was caught in possession by van Persie who raced down the right and crossed for Valencia, who had temporarily switched positions with the Dutchman, but the unmarked Ecuadorian failed to connect properly from six yards out and skewed the ball horribly wide.