The right-back was sent off in the 1-0 defeat at Swansea and now serves a one-match ban, with David Edgar in line to deputise.
But Michael Duff is closing in on a return to full fitness having sustained a calf problem on the opening day against Nottingham Forest.
Striker Chris Iwelumo missed Scotland's double header against Lithuania and Liechtenstein after suffering a hamstring injury late in the defeat to Swansea.
He will also be assessed, but Laws is hopeful both Iwelumo and Duff will be passed fit for action.
Midfielder Chris McCann remains a long-term absentee with a knee injury.
