By North-west correspondent Alex Stevens

Ashley Young will undergo surgery on a severe groin injury that is expected to keep him out for months, Louis van Gaal revealed on Friday.

The Manchester United manager said that Young will be sidelined for “a long time” with the injury he sustained in the team’s 1-0 win over Liverpool last Sunday.

Speaking to MUTV on Friday, Van Gaal said the former England international will go under the knife to cure a “severe” injury and his facing months out.

It is another crushing injury blow for United, who are already without full-backs Luke Shaw, Marcos Rojo and Antonio Valencia due to serious injury.

Young fell to the ground clutching his side towards the end of the first half at Anfield immediately called for medical attention.

Sources told Football Insider it was a serious looking injury and it initially appeared he could face a lengthy spell on the sidelines.

United’s worst fears have now been realised as Van Gaal is once again forced to turn to inexperienced players to plug the gap in the wide defence positions.

The Premier League giants host Southampton at Old Trafford on Saturday, with rookie Cameron Borthwick-Jackson, who replaced Young at Liverpool after 41 minutes, likely to step in once again at left-back, with Matteo Darmian at right-back.