St Mirren centre-back Joe Shaughnessy is suspended for Wednesday’s cinch Premiership encounter with Ross County.
The defender was sent off in the closing stages of Saturday’s 2-0 defeat by Hearts.
The skipper joins fellow central defender Conor McCarthy (ankle) on the sidelines.
Harry Clarke is suspended for County’s trip to Paisley.
The Staggies defender picked up two yellow cards in the 1-1 draw with Dundee United in Dingwall at the weekend.
Boss Malky Mackay will assess his squad as he looks to keep the pressure on their relegation rivals at the bottom of the table.
'I love my job. I love being able to play this sport. In the end, there’s something addictive in winning for me' Alexia Putellas speaks about what drove her back from an ACL injury to lift the World Cup
Alexia Putellas: "We’re already the only club to have won the men’s and women’s Champions League, so the only thing even more historic to do than that would be to win it in the same season"
