The Chilean opened the scoring with a sublime backheel and, after his team-mate had side-footed home the second, he netted again with a stunning strike from the edge of the area
Arsenal prevented Manchester United from returning to the top of the Premier League by routing Louis van Gaal’s side 3-0 at the Emirates on Sunday.
The Gunners blew their vistors away with a sensational first-half display, with all of their goals coming inside the opening 19 minutes.
Alexis Sanchez broke the deadlock with a sublimed backheel and then, after Theo Walcott had teed up Mesut Ozil for the second, the Chilean netted again with a thunderous strike from the edge of the area.
More to follow…