Manchester United 1-1 Arsenal: Olivier Giroud heads in late to save Gunners' blushes - 5 things we learned

Jose Mourinho and Arsene Wenger resumed their bitter rivalry, with the Arsenal boss looking to score a first Premier League win over his managerial nemesis.

And it was the Frenchman who had the last laugh with Olivier Giroud snatching a late equaliser their play all afternoon scarcely deserved.

Juan Mata looked to have continued Wenger's dismal run against Mourinho putting the home side ahead after the hour.

But despite never looking likely throughout Giroud popped up in the right place at the right time to save his team's - and his manager's - blushes with a well-taken header.