Bild report that Borussia Dortmund want to sign RB Leipzig defender Lukas Klostermann, with head coach Lucien Favre a big fan of the Germany international.
RB Leipzig remain confident that Klostermann will sign a contract extension with the Bundesliga leaders but if he decides against a new contract, Leipzig may sell him in the summer.
Borussia have concerns in the wing-back areas with the future of Achraf Hakimi, on loan from Real Madrid, remaining uncertain.
Bayern Munich have also shown recent interest in signing the 23-year-old.
