Motherwell face a shortage of defenders for the clash.
Steven Saunders (ankle) is expected to miss out while Stevie Hammell (hamstring) could remain on the sidelines, and Stephen Craigan's participation is doubtful as he is on international duty for Northern Ireland in their Euro 2012 qualifier against Slovenia 24 hours before kick-off.
Goalkeeper Darren Randolph should be fine to play despite his involvement for the Republic of Ireland while Keith Lasley and Francis Jeffers both return.
Morgaro Gomis is suspended for United, who travel to Fir Park with Craig Conway (thigh) available again and with Scott Severin looking to make his first appearance for five months following an ankle problem after being an unused substitute against Inverness.
Garry Kenneth is the only definite injury absentee with a knee problem.
Motherwekk (from): Randolph, Hateley, Gunning, Craigan, Hutchinson, Page, Hammell, Lasley, Jennings, Humphrey, Jones, Murphy, Sutton, Jeffers, Forbes, Casagolda, Hollis.
Dundee United (from): Pernis, Dillon, Watson, Douglas, Van der Meulen, D Robertson, S Robertson, Swanson, Russell, Goodwillie, Daly, Shala, Dixon, Kovacevic, Armstrong, Severin, Banks, Conway, Buaben, Allan.