Kenny Miller will see a specialist to cure a hamstring problem so he can play a major role in the Clydesdale Bank Premier League run-in. He will travel to London next week to seek specialist help to resolve the problem but is expected to sit out Wednesday's trip to St Mirren and the visit of Motherwell on Saturday.
"His injury is an awkward one," said boss Walter Smith.
"It's dogged him for a while and he has been able to play with it but he is getting to the stage now where it is becoming more and more painful.
"He is going to see a specialist in London next week. I'm hopeful now that they have diagnosed exactly what it is, the treatment won't be a long one.
"He will certainly miss our next two games but I'm hoping it won't be too long before he is back fit again."