Rangers midfielder Niko Kranjcar has been ruled out for six months with a cruciate ligament injury.
Manager Mark Warburton confirmed the news on Wednesday, revealing that the Croat is likely to miss the rest of the season.
Kranjcar suffered the problem in training a fortnight ago and has travelled to London to undergo surgery.
"Niko is unfortunately suffering from an ACL injury," Warburton told reporters in a press conference. "He's currently having it reconstructed by one of the best surgeons down in London.
"It will be a six-month rehabilitation period for Niko. Everyone in the building is so disappointed for him. They know how hard he works."
As a result of the injury blow, Warburton has claimed that he may consider bringing in a replacement on loan in the January transfer window in order to boost the squad's "strength and depth".
The former Tottenham Hotspur midfielder joined Rangers from New York Cosmos in June.
Danielle Joynson
