Paul McGowan's late penalty earned St Mirren a 1-1 draw with Celtic in a controversial match in Paisley.
St Mirren have been handed a fitness boost with the news defender Marc McAusland is set to make a speedy return against St Johnstone.
St Mirren fear Marc McAusland faces a lengthy spell out of action after suffering a suspected fractured eye socket.
St Mirren have revealed that defender Marc McAusland suffered a fractured eye socket during Saturday's 1-1 draw with Aberdeen.
St Mirren have completed the signing of defender Marc McAusland, who has penned a three-year deal.