Manchester United manager Louis van Gaal has revealed that defender Phil Jones missed Sunday's Premier League draw with Chelsea because of shin splints.
The England international made his United comeback after four games out with a hamstring injury in the 2-2 draw at West Bromwich Albion on Monday, but didn't feature in the Old Trafford game against Jose Mourinho's charges, which finished 1-1.
Van Gaal told reporters after the game: "The match against West Brom was his first after a long injury period. We brought him back and he trained for more than a week with the first team, then had to play 90 minutes.
"Then he had a sore feeling in his shin. On Saturday he could not continue training, even though it was a very light session before the match. He had shin splints, which is very painful.
"I don't know how long it will take [for him to recover]."
Manchester United are currently eighth in the Premier League table.
Giuseppe Labellarte
