Liverpool's injury situation shows no signs of improving after playmaker Philippe Coutinho was ruled out until February.
The Brazil international is the latest player to fall victim to a hamstring strain - Dejan Lovren also sustained a similar problem in Tuesday's Capital One Cup semi-final victory at Stoke - and his extended absence is a significant blow to an already threadbare squad.
Manager Jurgen Klopp is likely to face Exeter in the FA Cup on Friday with no senior centre-back with Kolo Toure's issues with cramp at the Britannia Stadium expected to keep him on the sidelines alongside Lovren, Mamadou Sakho and Martin Skrtel.
As a result Klopp is looking at reinforcements in the transfer window but none will arrive in time for the cup tie.
"Phil is more serious than Dejan, [who is more serious] than Kolo but none of these three will be available for tomorrow," he said.
"With muscle injuries you don't know. Kolo was cramp and that is not a problem but after three days it is not possible to play the next game but for next week it should not be a problem.
"With Dejan will be available after Man United (on January 17) and Phil needs one, maybe two or three weeks longer.)