The Buddies defender picked up a stomach injury in the 2-1 Scottish Premier League defeat by Dundee in midweek which is causing manager Danny Lennon "real concern".
Lennon revealed Jim Goodwin's calf complaint makes him "touch and go" for Saturday's SPL match against Dundee United while Gary Teale is making good recovery from his abductor problem and Steven Thompson will shrug off a tight groin.
Asked if any of his players could be struggling to make the final, the Paisley boss said: "At this minute in time we have got real concern over Lee Mair. He is struggling with a stomach strain."







