Caley Thistle could be without defender Carl Tremarco for up to two months after he suffered a hamstring injury.
Englishman Tremarco picked up the injury during the first-half of Caley Jags’ 4-1 victory over Falkirk on Tuesday, forcing him to be substituted before half-time.
The 32-year-old, who returned from a four-month knee ligament injury absence in September, will undergo a scan on the injury to determine its severity.
Inverness manager John Robertson expects an absence of between four to eight weeks, and he said: “Carl has tweaked his hamstring. We’re going to get it scanned and see how he is.
“It is a blow for everybody because, since he has come back into the team, he has done great, but he has played a lot of games in quick succession.
“Carl had come back from his previous injury and the pitches have been heavy at times and hard at times.
“He just felt it go during the Falkirk match. Hamstrings are notorious, you’ve got to leave them for three or four days to settle and then you get a scan.
“The best case scenario, if it is possibly just a strain, might be two to three weeks, but any tear at all – small or large – and we are looking at anything from five to eight weeks.”
Robertson remains keen to add a defender to his squad during the January transfer window but reckons it could be nearer the end of the month before further players come in. Robertson’s only addition so far is former Falkirk striker Nathan Austin.