The Greek defender has played just 41 games in three seasons.
The Bayer Leverkusen loanee is out for three months with a shoulder problem.
Liverpool have reportedly returned for Schalke defender Kyriakos Papadopoulos.
The Greek international is set to depart Schalke 04 in the summer.
The Schalke 04 owned defender has had a torrid time with injuries over the years.
Liverpool are reportedly keen to bolster their defensive ranks in the summer.
There could be defensive comings and goings at Anfield this summer, with Liverpool looking for new blood that could free up a club legend for transfer.
A selection of the latest stories involving Liverpool Football Club this Thursday morning
Liverpool are on the verge of winning the Premier League, but Brendan Rodgers will be looking to strengthen his squad this summer.
Arsenal are reported to have allowed defender Johan Djourou to sign a permanent deal to stay on at Hamburg, leaving a vacancy for an up-and-coming young centre back to join the Gunners.