Manchester United hero Gary Pallister has concerns over Phil Jones' future.
Pally worries over Jones' long-term fitness.
"He's had a few injuries and when that happens so early in your career, you wonder," Pallister told the Manchester Evening News. "With Jones, I think it is the way he plays.
"He's so whole-hearted, he throws himself into anything and everything. You look at people like Bryan Robson who did that and picked up his fair share of injuries.
"I think there are times he's got to be a bit more circumspect rather than that whole-hearted approach.
"But it is hard to take it out of somebody. When you've got someone like Robson or Roy Keane, they are never going to shirk a challenge.
"Unfortunately, Jones has picked up a number of injuries and when that happens early in your career, you do worry about the future."