Dundee United are without defender Sean Dillon.
The Irishman was on the way back from a calf injury but suffered a setback in training on Tuesday.
He will join leg-break victim Scott Severin, who will be on the sidelines for the rest of the season, in the stand.
Apart from those two boss Peter Houston has a full squad to choose from.
Motherwell have no fresh injuries for the clash.
Shaun Hutchinson is on course to return from an ankle problem immediately after the international break.
Long-term injury victim Steven Saunders (Achilles) is the only other absentee.
Dundee United (from): Pernis, Douglas, Dixon, Watson, Kenneth, Gunning, Smith, Allan, Flood, Rankin, Armstrong, Robertson, Mackay-Steven, Hilson, Dow, Marsh-Brown, Russell, Daly, Dalle Valle, Banks.
Motherwell (from): Randolph, Hateley, Hammell, Clancy, Craigan, Lasley, Jennings, Humphrey, Law, Higdon, Murphy, Daley, Forbes, McHugh, Carswell, Lawless, Page, Hollis.