Manchester United head coach Reuben Amorim has explained why his side lost to Arsenal in the Premier League on Wednesday, December 4.

Amorim's side lost 2-0 to Arsenal at the Emirates Stadium in what was the Portuguese tactician's first defeat since joining the Red Devils last month.

Dutch international Jurrien Timber gave the Gunners the lead in the 54th minute before William Saliba added the second in the 73rd minute.

Both goals came from corner kicks, and Amorim believes the set pieces changed the game, which was otherwise fairly even.

“The set pieces changed the game,” Amorim told Match of the Day.

“We could’ve been more aggressive towards the Arsenal box. Until the set pieces, the game didn’t have too many opportunities for both sides; the set pieces killed the game.

“We were committed, and we lost to the set pieces. We tried to play, but they are a very organised team and it’s hard to score. I felt the players were in control of the game; the set pieces changed the game in the second half.”