Ashley Young could be set to spend several weeks on the sidelines after suffering a hamstring injury during Manchester United's 1-1 draw at Stoke.
Young had to be substituted in the 75th minute at the Britannia Stadium and manager Louis van Gaal has told MUTV he thinks the injury is "very bad."
"He has a hamstring injury," he said. "He's out for many weeks, I think."
Louis van Gaal tells #MUTV Ashley Young suffered a hamstring injury and fears he could be out for "many weeks".
- Manchester United (@ManUtd) January 1, 2015
However, he added: "I'm not a doctor so we have to wait for tomorrow or the day after tomorrow."
Van Gaal also repeated his belief that United's poor away form means they will struggle to challenge for the title.
"When you want to win the league you have to win away from home," he said. "At the minute we aren't doing that."
Van Gaal, who said "neither team deserved more" than a point from the match, told Sky Sports his side "had difficulties defending long balls" in an awkward swirling wind.
Jonny Evans was particularly grateful after seeing former teammate Mame Biram Diouf miss a clear chance after the Northern Ireland international misjudged a long ball.
Evans said: "It was scrappy, hard to judge the ball with the wind, but that's the challenge for us. [Diouf] made a bit of a mess of it and I'm thankful for that."