James McCarthy must prove his fitness, with question marks remaining over the Everton midfielder's suitability for a starting role due to his hamstring issue.
Last night, England were beaten 1-nil by Germany in their friendly in Dortmund.
Lukas Podolski scored the only goal of the game in his 130th and final international game
The pressure is on Scotland manager Gordon Strachan once more after they were held to a 1-1 draw by the world number 117-ranked side, Canada.
They're 4-points off a playoff spot in Group F ahead of Sunday's visit of Slovenia to Hampden.
