Rangers defender Connor Goldson is out for the rest of the season after picking up a knee injury in training.
The 31-year-old centre-back was involved in a tangle with a team-mate and required a scan which confirmed a medial ligament problem.
Vice-captain Goldson has sat out Rangers’ last two matches and boss Philippe Clement will be without the services of a key player for the final four cinch Premiership fixtures and the Scottish Gas Scottish Cup final against Celtic later in the month.
The Light Blues are three points behind leaders Celtic and ahead of the visit of Kilmarnock on Sunday, Clement revealed some “bad news”.
The Belgian boss said: “There was a duel on Wednesday at training and a player fell on Connor’s knee and he hurt his knee badly.
“He tried to continue but couldn’t. He had a scan and he has a tear in his medial ligament so he will be out for the rest of the season.”