Jurgen Klopp is facing an ongoing shortage of defenders for Tuesday night's Champions League clash with Bayern Munich, while Liverpool are also sweating on the availability of Roberto Firmino.
The Premier League title contenders welcome the reigning Bundesliga champions to Anfield for the first leg of arguably the most eagerly-anticipated tie of the first knockout phase.
Key forward Firmino missed training on Monday due to a virus, but is expected to take his usual place alongside Mohamed Salah and Sadio Mane in Liverpool's deadly attacking triumvirate.
In defence, the absence of Virgil van Dijk through suspension and injuries to Joe Gomez (ankle) and Dejan Lovren (hamstring) mean that Joel Matip is currently the hosts' only fit and available senior centre-back.
Klopp said he would have to wait "minute by minute" to see if there was a chance that Lovren could feature against Bayern, with Fabinho likely to be deployed once again as a makeshift central defender.
Trent Alexander-Arnold looks set to regain his starting berth at right-back after returning from injury with a second-half cameo in the 3-0 Premier League win over Bournemouth last weekend, while captain Jordan Henderson - who was also on the bench for that fixture after a muscle issue - should come into the midfield.
James Milner may have to make do with a place among the substitutes with Naby Keita in better form and Georginio Wijnaldum - back in training after illness - an important figure under Klopp.
Xherdan Shaqiri faces a late fitness test following a minor abdominal problem, while Alex Oxlade-Chamberlain is stepping up his recovery from a long-term knee injury.
As for Bayern, skipper Manuel Neuer was back in action following a thumb complaint during Friday night's eventful 3-2 win at Augsburg.
Boss Niko Kovac said he was optimistic that winger Kingsley Coman would be available after an ankle scare that followed his first-half brace at SGL Arena, while Jerome Boateng could be an option after stomach problems if he is not deemed an infection risk.
Mats Hummels and Niklas Sule should continue as Bayern's centre-back partnership regardless, but Thomas Muller is suspended for both legs following his red card for a tackle on Ajax's Nicolas Tagliafico that occurred in the final group stage contest.
Arjen Robben (thigh), Renato Sanches and Corentin Tolisso (knee) are all out, while it is unclear if Franck Ribery will be included in the matchday squad following the birth of his daughter.
Liverpool vs Bayern Munich predicted line-ups
Liverpool XI (4-3-3): Alisson, Alexander-Arnold, Fabinho, Matip, Robertson, Henderson, Wijnaldum, Keita, Salah, Mane, Firmino
Bayern Munich XI (4-3-3): Neuer, Kimmich, Hummels, Sule, Alaba, Goretzka, Thiago, James, Coman, Gnabry, Lewandowski
