Rangers top scorer Martyn Waghorn will not be fit for next Sunday's Scottish Cup semi-final against Celtic.
The striker has not featured since sustaining a knee injury in the Ibrox side's win over Kilmarnock in February.
"Martyn won't be in the Old Firm game," said Rangers manager Mark Warburton. "The guy's been out for six weeks. He has to get fit. You can't just come back in to a game of that level.
"But if we get through that then hopefully he'll figure in the final."