Robin van Persie has warned Manchester United that Marcus Rashford may always have a “weakspot” after picking up a back injury.
Rashford is facing at least six weeks on the sidelines with a stress fracture of the back.
The 22-year-old picked up the injury after being introduced as a second-half substitute in the midweek FA Cup third-round replay win over Wolves.
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Man Utd missed their forward in a 2-0 loss to Liverpool on Sunday with Van Persie urging United to be “careful” with Rashford’s injury.
“I had a similar injury, a stress fracture in my lower back,” Van Persie told the Premier League.
“I was out with that for four months. You can’t really do much, just rest and let it heal.
“But it is a difficult one because it always stays a little bit of a weakspot. Even now, it is not that I’m like in pain or something, but it’s a sensitive area. So you have to be really careful with that.”