The national team boss added the Leeds United striker and Rangers midfielder after confirmation of four withdrawals.
McCormack rejoins the squad having last featured in the Carling Nations Cup against
The game is Levein's last opportunity to get a look at his squad before the 2014 FIFA World Cup qualifiers begin next month.
Scotland starts its campaign with a double-header at
Michael Laudrup admits the biggest challenge of his northern summer will be to find another Michu and ensure Swansea City is more clinical in front of goal next term.