Luke Shaw injury: Manchester United left-back hurt during England's win over Scotland

Left-back is now a doubt for the game against Arsenal

Luke Shaw’s performance in the derby will be key to how his Manchester United side get on (Getty Images)

Luke Shaw is a doubt to play against Arsenal on Saturday after picking up a knock during the England's friendly win against Scotland.

Manchester United boss Louis van Gaal could now now be without 12 players for the clash on Saturday evening, with Angel Di Maria also hurting himself on international duty last night.

Shaw was substituted at half-time after picking up a couple of knocks during the game that left his hamstring sore.

The teenager missed the start of the season with a hamstring problem.

However, Shaw said he was "hoping to be fit" for the game at the Emirates.

“I picked up a few knocks during the game and my left hamstring, which I hurt at the start of the season, I could feel a little bit,” he told Sky Sports.

“We had a discussion at half-time over whether to bring me off then but it was a game I didn’t want to come off in so I played the extra 15 minutes and then Roy decided to sub me off.”

As for whether he would be available for Saturday’s game at Arsenal, Shaw added: “We will just have to see but I am hoping to be fit.”