(Current league positions in brackets)
Sunday, May 6
Dundee Utd (4) v Celtic (1)
Dundee United defender Gavin Gunning is still fighting to return from a shoulder injury which has kept him out the last two games. Garry Kenneth and Johnny Russell are both doubts for the Clydesdale Bank Premier League clash with Celtic while Willo Flood is nursing a knock from the midweek defeat by Rangers.
Mikael Lustig is set to start for Celtic as manager Neil Lennon is looking to give the Sweden defender some game time before he goes off to the European Championships. Midfielder Ki Sung-yueng (hamstring) and winger James Forrest (ankle) are still out.
Last season: Celtic 4 Dundee Utd 1, Dundee Utd 1 Celtic 3, Celtic 1 Dundee Utd 1, Dundee Utd 1 Celtic 2
Last five league matches: Dundee Utd W L W D L; Celtic L W W W W
Top scorers: Jon Daly (Dundee Utd) 21; Gary Hooper (Celtic) 24
Referee: Iain Brines (Scotland)
Hearts (6) v St Johnstone (5)
Striker Craig Beattie is again set to miss out for Hearts with a hamstring strain which could yet hamper his involvement in the William Hill Scottish Cup final on May 19. Ian Black continues to nurse a hernia which is thought to require surgery come the end of the season, when the midfielder is expected to leave the club, while Adrian Mrowiec (knee) has returned to training.
Chris Millar is a doubt for St Johnstone after coming off against Celtic with a recurrence of a groin injury and he will be assessed, as will defender Frazer Wright who has a knock. Striker Francisco Sandaza is suspended, midfielder Lee Croft is still out with a hamstring injury, and Dave Mackay is likely to be missing again due to a family issue.
Last season: Hearts 1 St Johnstone 0, St Johnstone 0 Hearts 2, Hearts 1 St Johnstone 1
Last five league matches: Hearts W W L D L; St Johnstone W L D L L
Top scorers: Rudi Skacel (Hearts) 15; Francisco Sandaza (St Johnstone) 17
Referee: Steven McLean (Scotland)
Monday, May 7
Hibernian (11) v Dunfermline (12)
Captain James McPake (groin) could join suspended striker Leigh Griffiths in missing Hibernian's clash with Dunfermline. Midfielder Lewis Stevenson is available again following suspension, but Griffiths is out along with midfielder David Wotherspoon (suspended), while Tom Soares (Achilles) is a doubt and his fellow winger Danny Galbraith (groin) is unavailable.
Dunfermline defender Alex Keddie is suspended but Mark Kerr should be fit despite suffering a knock in the 0-0 draw at Inverness which means the Pars enter the Hibs fixture with a five-point deficit to make up in two games.
Last season: No Corresponding fixture
Last five league matches: Hibernian W D L L W; Dunfermline L L D W D
Top scorers: Garry O'Connor (Hibernian) 15; Andy Kirk (Dunfermline) 12
Referee: Euan Norris (Scotland)