Manchester United boss Louis van Gaal says injury to Phil Jones does not look good after the 22-year-old suffered a knee injury on Wednesday night.
The Englishman was an early substitute in United's 3-1 win over Burnley at Old Trafford and will be assesses this morning to understand for how long he will be out of action.
"I think, for [Phil] Jones, we have to wait and see," van Gaal told MUTV.
"I think it shall be difficult as he was very disappointed when I spoke with him. Maybe it's a knee problem so it's not good.
"[Daley] Blind has a headache but I don't think he is out of the game on Monday [in the FA Cup against Preston North End]."
Meanwhile, van Gaal admits his team could have done better in the first half of the game.
"It was not good in the first half," the Dutchman added.
"We didn't perform well and Burnley were the better team on the pitch. But we were ahead in the result and I was very happy with that.
"Okay, it is also from corner kicks. We train a lot on corner kicks but it was a lucky result at half time. I have to say we improved in the second half and created more chances, also scoring a third goal.
"We could have scored more and we only gave one chance away to Burnley."
