Recovering Nathan Patterson will be given two more training sessions to prove his fitness ahead of Scotland's World Cup qualifying blockbuster with Ukraine.
The 20-year-old right-back has been out for two months after ankle surgery but Steven Naismith has revealed the Everton star is in contention for the big one on Wednesday night.
Boss Steve Clarke previously gave a cautious verdict on Patterson's fitness but he appears to be now trending in the right direction.