Blackburn Rovers defender Grant Hanley has withdrawn from the Scotland squad to face Poland in an international friendly on Wednesday.
Hanley becomes the second player to pull out of Gordon Strachan's side, with Norwich midfielder Robert Snodgrass also missing the game due to a recurring muscle problem.
Celtic striker Leigh Griffiths, who scored a hat-trick in the Bhoys' 5-0 win over Inverness yesterday, will replace Snodgrass but it has not yet been confirmed who will take Hanley's place.
"Scotland A Update: Out - Grant Hanley, @robsnodgrass7. In - @Leighgriff09," read the SFA's official Twitter account.
Hanley, 22, has made 12 appearances for his country since making his debut in 2011, scoring one goal.