An own goal from Kieran Gibbs and a Wayne Rooney strike gave Manchester United victory over Arsenal.

Gibbs collided with goalkeeper Wojciech Szczesny before deflecting Antonio Valencia's shot into his own goal.

Rooney added a second with a chipped finish after Angel Di Maria led a United counter-attack.

Olivier Giroud marked his comeback from a broken leg with a stunning left-foot strike in stoppage time but United held on to go fourth in the Premier League.