Catch up with all of the team news and stats and choose your team's preferred XI for Saturday's Scottish Premiership games.
Kick-off at 15:00 GMT unless stated
Aberdeen v Celtic (12:30)
Aberdeen will be without Slobodan Rubezic for up to three months following the scan on his knee injury but fellow centre-back Stefan Gartenmann could return from injury.
Celtic defender Cameron Carter-Vickers suffered a recurrence of his hamstring issues and will miss out while Greg Taylor (calf) remains on the sidelines but new signing Adam Idah is in the squad.
Daizen Maeda, Yang Hyun-jun and Oh Hyeon-gyu are on Asian Cup duty along with Reo Hatate, who has been ruled out for about six weeks with calf trouble.
Did you know? Since last scoring against Celtic 125 minutes ago, Aberdeen have conceded eight times to the league leaders.
Dundee v Heart of Midlothian
Dundee midfielder Luke McCowan returns from suspension while Michael Mellon has recovered from the knock that kept him out at Aberdeen. Diego Pineda, Charlie Reilly, Antonio Portales, Ricki Lamie and Ryan Howley remain out while Aaron Donnelly is working his way back to fitness.
Hearts could hand a debut to Scott Fraser following the midfielder's arrival on loan from Charlton. Australian duo Kye Rowles and Nathaniel Atkinson remain on Asian Cup duty, while Peter Haring, Barrie McKay and Cammy Devlin are still out along with Liam Boyce, who is facing a further two months of recovery as he prepares for surgery on a hamstring issue.
Did you know? Dundee are one of only two opponents in the Scottish Premiership that Hearts top scorer Lawrence Shankland has not scored against so far this season, the other being Kilmarnock.
Hibernian v St Mirren
Hibernian's three deadline-day signings Owen Bevan, Nectarios Triantis and Eliezer Mayenda are all in contention but Paul Hanlon is ill, while Josh Campbell remains injured and Martin Boyle, Lewis Miller and Rocky Bushiri are on international duty.
Chris Cadden made his comeback from a ruptured Achilles in a midweek reserve game, along with Adam Le Fondre, but neither are ready for first-team action.
St Mirren captain Mark O'Hara is out with thigh problem and winger Conor McMenamin is also injured. Ryan Strain is recuperating from groin surgery and Keanu Baccus is away with Australia.
Did you know? Hibs are one of two teams in the Scottish Premiership who could field the most winter transfer signings this weekend, seven along with Motherwell, while St Mirren could play four new signings in total.
Motherwell v Kilmarnock
Motherwell could include loan signings Adam Devine, Jili Buyabu and Jack Dale while Dan Casey and Shane Blaney have trained all week after injury lay-offs. Callum Slattery and Adam Montgomery are out long term.
Former Well striker Kevin van Veen could make his Kilmarnock debut after signing on loan from Groningen but defender Corrie Ndaba serves the first of a two-game ban. Centre-back Robbie Deas had an operation on a fractured cheekbone and will be out for a few weeks while midfielders Brad Lyons and Kyle Magennis remain absent.
Did you know? New Kilmarnock forward Kevin van Veen's first match back in Scottish football could be against the team he left in the summer, Motherwell.
Rangers v Livingston
Rangers' new loan signings, winger Oscar Cortes and midfielder Mohamed Diomande, are available but unlikely to start. Defender Ben Davies, strikers Kemar Roofe and Danilo and midfielder Kieran Dowell remain out along with forward Abdallah Sima, who was sent home from the Africa Cup of Nations with a long-term thigh injury.
Midfielder David Carson goes into the Livingston squad after signing from Inverness Caley Thistle and defender Sean Kelly has returned to training after injury. Cristian Montano is sidelined along with captain Michael Devlin and forward Kurtis Guthrie injured his neck against Ross County on Tuesday.
Did you know? Livingston were one of only three teams to draw as an away Scottish Premiership side against Rangers last season and there have been none so far this term.
Ross County v St Johnstone
Ross County could include deadline day signing Michee Efete but skipper Jack Baldwin is a fitness doubt. Scott Allardice, Ross Callachan, Ryan Leak and Dylan Smith remain out.
St Johnstone include new striker Adama Sidibeh while Chris Kane could come back into contention. Sam McClelland, Ali Crawford and Drey Wright are still not ready to return while Ross Sinclair and Cammy MacPherson are long-term absentees.
Did you know? Saints are joint lowest scorers in the division with Livingston on 15, while County are second lowest on 19.