Manchester United boss Louis van Gaal has confirmed that Luke Shaw limped off with a 'dead knee' in his side's 2-1 win against Everton at Old Trafford earlier today.
The England international was making only his second appearance for the Red Devils following his £31 million move from Southampton after a frustrating spell on the sidelines through injury.
He was forced from the pitch after 70 minutes with what looked to be a serious knee injury, being replaced by youngster Tyler Blackett. After the game, which was won for Manchester United thanks to goals from summer buys Angel di Maria and Radamel Falcao, Van Gaal confirmed the injury, although did not mention how long the 19-year-old could be out for.
"He has a dead knee,' he told reporters afterwards. 'He could have made it worse, so that is why he stepped out."
Shaw has been selected to feature for the England U21 side during the international break, but is now likely to pull out and may be back for Manchester United when the Premier League returns. The Red Devils' next fixture comes against West Brom on October 20.
Although there will be some concern at Old Trafford regarding Shaw's fitness, the victory over Everton, who were briefly level thanks to a Steven Naismith goal, has moved them up to 4th in the Premier League will no doubt cheer them up.
The Toffees could have been level earlier on had David de Gea not saved Leighton Baines' penalty on the stroke of half time - and Van Gaal believes there is plenty more to come from his team when they find their feet.
He said: "We are not playing well but we are fourth in the table – so what will happen when we do play well?"
The Dutch boss was also pleased to see Falcao get his first goal in a Manchester United shirt following his summer switch from Monaco.
"He needed that. He was forcing himself too much to score. Now he has, it'll be better after the international break."