Manchester United’s Luke Shaw has been ruled out for up to a month, according to Sky Sports News. 

Shaw looks set to miss matches against Swansea, Sunderland, Burnley and QPR and may not be available until the middle of September.

The left-back was absent from yesterday’s lineup against Valencia, but was seen signing autographs following United’s 2-1 friendly win over the La Liga side on Tuesday.

Manchester United manager Louis van Gaal briefly commented on his side’s injures to MUTV after the contest: “We have a lot of injuries now. We don’t have to forget that [Jonny] Evans was injured, Shaw was injured, [Antonio] Valencia was injured and these are three defenders so we have to wait and see if they can play on Saturday.”

At this time, there has been no official comment from United regarding the details or extent of Shaw’s injury, or that of Jonny Evans and Antonio Valencia. [Update: Manchester United have announced that Shaw has suffered a hamstring injury]

United did start Ashley Young at the left wing-back position during most of the preseason, because Van Gaal had ruled Shaw to be “not very fit” following his return from World Cup duties this summer; Reece James and Tyler Blackett have also seen time at both wing-back spots.

Shaw was asked to train alone from the rest of the squad and took part in double sessions to build his fitness levels during United’s tour of the United States.

The 19-year-old joined the twenty-time champions of England for £27million earlier this summer from Southampton.

Shaw made only one appearance as a member of the England World Cup squad which crashed out of this summer’s tournament in Brazil.