Liverpool are keeping tabs on Kyriakos Papadopoulos's situation at Bayer Leverkusen.
The Greece defender is on-loan at Bayer from Schalke and his contract has just over a year to run.
Reds boss Brendan Rodgers has been a long-term fan of Papadopoulos and is weighing up a summer bid, says BILD.
Schalke chief Horst Heldt insists: "We plan to have Papa for the upcoming season."
But with his deal due to expire in 2016, Schalke could be forced to cash in this year.