Kevin Thomson is set for a lengthy spell on the sidelines after finding out he requires surgery to cure a persistent groin problem.
The midfielder has been carrying the injury for the last couple of weeks, and it was hoped that treatment by the club and a rest from the first team would see him shake it off.
However, it has now been decided that going under the knife is the only option for the player who will miss a number of crucial games for the Gers.
Thomson had made 26 appearances for the club in all competitions so far this season and his combative presence will be missed during the month he is now facing out of the side.
Games he may miss
He looks set to miss the CIS Cup semi-final with Hearts as well as the Scottish Cup fifth round tie with Hibernian, should Rangers get past East Stirling on Wednesday.
The midfielder would also be forced to sit out the SPL games with St Mirren, Falkirk and Kilmarnock, and may still be unavailable for the massive clashes with Panathinaikos in the last 32 of the Uefa Cup on 13th and 21st February.