Manchester United's Anthony Martial stands next to kneeling teammate and substitute player Marcus Rashford after he sustained an injury during the English FA Cup third round replay soccer match between Manchester United and Wolverhampton Wanderers at Old Trafford in Manchester, England, Jan 15, 2020. (RUI VIEIRA / AP PHOTO)

LONDON - Marcus Rashford, the top scorer of Manchester United, would probably not be fit until February after injuring his back on Thursday, said Red Devils manager Ole Gunnar Solskjaer on Sunday.

During the FA Cup's third-round replay that Manchester United ousted Wolves 2-1, Rashford was sent on the pitch by Solskjaer as a second-half substitute but had to be replaced after 16 minutes.

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"He got a couple of knocks and jolts when he came on against Wolves and aggravated his back," the club's official website quoted Solskjaer.

"I wouldn't expect him to be back in the next few weeks," said the Norwegian."We've got a mid-season break and I'm not sure we'll see him before then. We're going to give him the time he needs."

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Rashford, 22, is the team's top scorer and third in the Premier League this season with 14 goals so far.

Manchester United lost to league leaders Liverpool 2-1 on Sunday without Rashford and stay in fifth place with 34 points, five points away from fourth-placed Chelsea.