Glen Johnson has questioned Liverpool's decision not to address their lack of options at the back in the January transfer window.
The Premier League holders have been without Virgil van Dijk since the Merseyside derby back in October, while his centre back partner Joe Gomez is pushing for a return before the end of the season after knee surgery in November.
Jurgen Klopp has relied on Jordan Henderson and Fabinho at times to drop back into defence, as well as youth options such as Rhys Williams, but Johnson believes Liverpool have made a mistake with their inactivity.