Motherwell manager Stuart McCall hopes to have a full squad to choose from.
Gavin Gunning has recovered from a shoulder injury while Francis Jeffers should shake off a hamstring problem.
Steve Jennings returns from suspension while the likes of Keith Lasley and John Sutton are expected to come back into the starting line-up after being rested for the draw at Hearts.
St Johnstone boss Derek McInnes will assess four players ahead of kick-off.
Jody Morris (back), Kevin Moon (calf), Chris Millar (groin) and Steven Anderson (knee) are concerns.
Peter Enckelman is set to return in goal after recovering from a knee problem while Peter MacDonald is suspended.
Motherwell (from): Randolph, Saunders, Hateley, Hammell, Gunning, Craigan, Hutchinson, Jennings, Lasley, Humphrey, Murphy, Sutton, Jeffers, Jones, Forbes, Hollis.
St Johnstone (from): Enckelman, Smith, Maybury, Grainger, Anderson, MacKay, Duberry, Gartland, Taylor, Adams, Craig, Moon, Davidson, Millar, May, Robertson, Caddis, Jackson, Clark, Morris.