The Merseyside-based outfit are in line for a busy end to the winter transfer window, with the club pushing to bring in two defenders before time runs out.
Liverpool are already on the verge of signing 25-year-old centre-back Ben Davies from Preston North End, with a deal worth up to £1.6m in place.
The Reds are now looking to bring another central defender in before the transfer window slams shut and have been linked with Marseille’s Duje Caleta-Car.
According to Sky Deutschland, Liverpool are also trying to get a deal done for Schalke star Kabak.
Jurgen Klopp’s side are locked in talks with the Bundesliga side over a loan deal, with an option to buy also being discussed.
However, Schalke would need to sign a replacement before sanctioning a transfer for the Turkey international.
The transfer window in Germany slams shut at 5pm UK time and Schalke may find it difficult to bring in a suitable defender before then.
