Celtic can extend their lead at the top of the SPL to eight points with a win at Motherwell, but Rangers will have four games in hand.

Aberdeen (6) v Dundee Utd (4)

Aberdeen will be without two key defenders, with Zander Diamond suspended and Alan Maybury (rib) injured.

Darren Mackie picked up a knock during the week and will also be absent, along with Richie Byrne, Jamie Smith (both hamstring) and Lee Mair (thigh).

Dundee United can recall midfielder Danny Swanson after a three-game suspension.

Manager Craig Levein also has Swanson's midfield colleague Willo Flood available following a thigh injury.

Last season: Aberdeen 2 Dundee Utd 4, Dundee Utd 3 Aberdeen 1 Aberdeen 3 Dundee Utd 1

Last five league matches: Aberdeen D W W L W; Dundee Utd W L D D D

Top scorers: Lee Miller (Aberdeen) 12; Noel Hunt (Dundee Utd) 18

Match odds: H 11-8 A 6-4 D 23-10

Referee: B Winter (Scotland).

Inverness CT (9) v Gretna (12)

Inverness will again be without their first-choice central defenders, with Grant Munro and Phil McGuire both ruled out by groin injuries.

Markus Paatelainen will also almost certainly miss the game after suffering a knock during the week.

Gretna will make changes to the team that played Kilmarnock last weekend, with midfielder Ryan Baldacchino having left the club.

Midfielder Paul Murray is still missing after suffering a cracked rib.

Last season: No corresponding fixture

Last five league matches: Inverness CT L L W W L; Gretna L L D D D

Top scorers: Marius Niculae (Inverness CT) 10; Craig Barr (Gretna) 5

Match odds: H 3-10 A 13-2 D 7-2

Referee: I Brines (Scotland).

Motherwell (3) v Celtic (1)

Brian McLean will replace Paul Quinn after the Motherwell captain suffered a broken jaw in a nightclub incident. McLean slots in at right-back after Quinn was ruled out for the rest of the season.

Stephen Hughes is over the illness which forced him off at half-time during last week's draw against Dundee United.

Celtic skipper Stephen McManus will face a fitness test on a calf injury. Manager Gordon Strachan has no other injury worries.

Last season: Celtic 1 Motherwell 0, Motherwell 1 Celtic 1 Celtic 2 Motherwell 1

Last five league matches: Motherwell L W W L D; Celtic L W W W W

Top scorers: Chris Porter (Motherwell) 15; Scott McDonald (Celtic) 29

Match odds: H 5-1 A 4-9 D 11-4

Referee: S Conroy (Scotland).

St Mirren (10) v Kilmarnock (11)

St Mirren will be without injured defenders Ian Maxwell and David van Zanten. Maxwell has a knee injury and Van Zanten remains sidelined after undergoing knee surgery.

Hugh Murray misses out as he completes a three-match ban, and Mark Corcoran is out in the cold after agreeing a pre-contract with Hamilton.

Kilmarnock hope to have Allan Johnston back after recovering from a knock while Mehdi Taouil (thigh) may make the bench.

Martyn Corrigan, Frazer Wright, Alan Morgan, Craig Bryson, Willie Gibson, Rhian Dodds and Tim Clancy are all out.

Last season: St Mirren 0 Kilmarnock 2, Kilmarnock 1 St Mirren 1 St Mirren 0 Kilmarnock 1

Last five league matches: St Mirren W L D L W; Kilmarnock W D D L D

Top scorers: Billy Mehmet (St Mirren) 7; Frazer Wright (Kilmarnock) 5

Match odds: H 21-20 A 2-1 D 23-10

Referee: C Allan (Scotland).

Sunday, May 4

Hibernian (5) v Rangers (2)

Hibernian are without suspended trio Guillaume Beuzelin, Colin Nish and Thierry Gathuessi.

Brian Kerr and Alan O'Brien come into contention after returning to training, but their fellow midfielder Merouane Zemmama remains sidelined after breaking his foot.

Rangers winger DaMarcus Beasley could end a lengthy spell on the sidelines following a knee ligament injury.

Lee McCulloch (foot) and Charlie Adam (knee) are also close to fitness but the match may come too soon for the midfield duo. Steven Whittaker is suspended.

Last season: Hibernian 3 Rangers 3, Hibernian 0 Rangers 2 Rangers 3 Hibernian 0, Hibernian 2 Rangers 1

Last five league matches: Hibernian L L W D L; Rangers W W D L L

Top scorers: Steven Fletcher (Hibernian) 14; Kris Boyd (Rangers) 21

Match odds: H 10-3 A 4-6 D 12-5

Referee: C Murray (Scotland).

Monday, May 5

Falkirk (8) v Hearts (7)

Falkirk will be without the suspended Arnau Riera. On-loan goalkeeper Shane Supple is expected to keep his place, but defender Dean Holden (broken leg) is still out, while Jack Ross could be omitted after signing a pre-contract agreement with St Mirren.

Hearts look set to welcome back winger Andrew Driver after the youngster recovered from a thigh tear. Striker Christian Nade could also return after missing the 1-0 win over Inverness Caley Thistle because of a head injury.

Laryea Kingston has shaken off illness and could start but Robbie Neilson will miss out with a pelvic complaint.

Last season: Hearts 1 Falkirk 0, Falkirk 1 Hearts 1 Hearts 0 Falkirk 0

Last five league matches: Falkirk D D L D L; Hearts D W D W W

Top scorers: Michael Higdon (Falkirk) 8; Laryea Kingston (Hearts) 6

Match odds: H 6-4 A 7-5 D 9-4

Referee: S Dougal (Scotland).

Sporting Life / Eurosport