article_snippet: Arsenal striker Danny Welbeck celebrates after scoring against former club Man United at Old Trafford .
article_snippet: Arsenal went ahead after 25 minutes when Nacho Monreal beat David de Gea after excellent running from Alex Oxlade-Chamberlain.
article_snippet: But the lead last for only 240 seconds as Wayne Rooney found Wayne Rooney unmarked in the penalty area and heading in Angel Di Maria's delivery.
article_snippet: Arsenal striker Danny Welbeck then rounded David de Gea after an underhit backpass from Antonio Valencia to score the decisive goal.
article_snippet: Sportsmail's Oliver Holt said following the draw: 'Arsenal's night just got better.
highlights_snippet: Arsenal defeated Manchester United at Old Trafford on Monday evening .
  