Borussia Dortmund general manager Michael Zorc has not ruled out the possibility of Nuri Sahin returning to the club.
Sahin, 24, left Dortmund for Real Madrid after their Bundesliga title success in 2011, but he failed to secure a regular spot in Jose Mourinho's team.
In the summer, he was loaned to Liverpool, where the holding midfielder has also struggled for first-team football under Liverpool boss Brendan Rodgers, leading to conjecture over his future.
Reports in England have this week speculated Inter Milan could sign Sahin during the January transfer window, although Dortmund's Zorc has expressed his interest in the Turkey international.
He told Bild: "Of course we follow Nuri's career. He is our boy. The problem in Liverpool is he is not playing in his best position.
"We once said: 'If Nuri says he does not want anything else but to play for Dortmund then this will be an issue for us. But it has to be doable.' Nothing has changed."