Rudi Skacel and Ruben Palazuelos are available again for Hearts.
Skacel is set to play despite an Achilles problem and Palazuelos is poised to return following a two-match suspension.
Lee Wallace is poised to shake off his ankle problem and continue at left-back, but Suso Santana (knee) is a major doubt and Kevin Kyle underwent double hernia surgery this week and remains out along with Darren Barr and Calum Elliot.
St Mirren have fitness doubts over David van Zanten and Hugh Murray ahead of the game.
Both players sat out training on Friday after picking up knocks in the Scottish Cup defeat by Aberdeen.
David Barron and Garry Brady are still looking for match practice following lay-offs.
Hearts (from): Kello, Bouzid, Zaliukas, Stevenson, Driver, Elliott, Skacel, Glen, Mrowiec, C Thomson, Wallace, J Thomson, Santana, Balogh, Webster, Templeton, Black, Palazuelos.
St Mirren (from): Gallacher, McAusland, Travner, McGregor, Potter, Thomson, Goodwin, Dargo, Higdon, McLean, Murray, van Zanten, Mair, Mooy, McGowan, Cregg, Wardlaw, Samson.