Dundee United defender Keith Watson has strained a calf muscle so will not be risked, but Garry Kenneth and Scott Severin are available after recent injury absences.
Long-term absentee Darren Dods (knee) is still out.
St Johnstone have doubts over Dave MacKay and goalkeeper Peter Enckelman.
Mackay is a slight concern with a hamstring injury, while Enckelman has a knee problem.
Graham Gartland (groin), Steven Anderson (knee) and Collin Samuel (hip) are all back in the squad.
Dundee United (from): Pernis, Dillon, Dixon, Kenneth, Van der Meulen, Severin, Douglas, Buaben, Gomis, Conway. D Robertson, S Robertson, Swanson, Daly, Shala, Russell, Goodwillie, Dow, Hill, Banks.
St Johnstone (from): Enckelman, Maybury, Grainger, MacDonald, Duberry, MacKay, Craig, Invincibile, Davidson, Millar, Moon, Novikovas, Robertson, May, Taylor, Smith, Anderson, Caddis, Samuel, Gartland.