Celtic striker Craig Beattie, who has been out of action since October, may miss the rest of the season after sustaining another hamstring injury.
Beattie (right) may not play again this season
"Craig has tweaked his hamstring, it's not the same injury but similar," said manager Gordon Strachan.
"We know it's not the same injury because he has had an MRI scan and this one is five centimetres away from the first one.
"He is a young enough boy to build that muscle up but it is annoying for him."
Beattie's early-season form had won him a place in Walter Smith's Scotland squad for the last three games of the World Cup qualification campaign.
"He started the season on fire and it had gradually fallen away through no fault of his own," added Strachan.
"I hope he can come back before the season ends but I don't know."