United striker David Goodwillie is suspended for the game after picking up his second booking of last season's competition in the final.
Danny Swanson is available after a ban but is a fitness doubt following illness.
Craig Conway is back in training after knee surgery but will not be rushed back while Scott Severin (foot), Mihael Kovacevic (knee) and Darren Dods (knee) remain out.
United (from): Pernis, Dillon, Watson, Dixon, Douglas, S Robertson, D Robertson, Kenneth, Gomis, Buaben, Shala, Cadamarteri, Swanson, Daly, Russell, Dow, Armstrong, Mentel, Banks.
