Hibs manager Shaun Maloney could be without four of his January arrivals when he takes his side to Parkhead to take on Celtic.
The new Easter Road boss has started well and got down to business over the winter break.
He landed Harry Clarke as Arsenal switched his loan club from Ross County, while Ewan Henderson joined from Ange Postecoglou's side.
Teenager Elias Melkersen signed from Norwegian champions Bodo/Glimt and Chris Mueller's long awaited debut is nigh after arriving on a pre-contract from Orlando City.
But all four may not feature with a hamstring issue making Clarke a doubt.
Henderson cannot play against his loan club even though the deal is eventually expected to turn permanent and the Hibees are still awaiting work permit clearance for Melkersen.
Mueller could yet make his debut but lacks match fitness after significant downtime following the conclusion of the MLS season and Maloney said on Friday: "Chris is not at the beginning of the process to come back but he’s probably not as far ahead as others because he’s not played for a period of time."
Defensive duo Paul McGinn and Ryan Porteous meanwhile will both serve suspensions but another winter addition, Rocky Bushiri, could solve something of a headache in Maloney's favoured back three.
Potential Hibs line-up
Hibs squad revealed
Matt Macey
Kevin Dabrowski
Josh Doig
Paul Hanlon
Darren McGregor
Lewis Stevenson
Rocky Bushiri
Chris Cadden
Sean Mackie
Drey Wright
Chris Mueller
Joe Newell
Alex Gogic
Jamie Murphy
Melker Hallberg
Dylan Tait
Scott Allan
Josh Campbell
Christian Doidge
Kevin Nisbet
James Scott
