Rangers skipper Steven Davis could miss the rest of the season with a groin injury, according to boss Ally McCoist.
The 27-year-old limped out of the club's recent win against St Mirren, and is unlikely to return again this season.
"Davo is struggling a little bit. It's not been confirmed yet in terms of the extent of the injury, but it looks like he'll probably need a wee operation towards the end of the season," McCoist told Sky Sports News.
Davis has made 39 appearances for Rangers this season.