Borussia Dortmund are among the teams looking at Chelsea centre-back Andreas Christensen.
The Danish international is a key member of the squad under Thomas Tuchel, but is pondering moving on at the expiry of his contract in the summer.
According to Sport1, Dortmund are the latest club to join the queue to sign him on a free transfer.
Christensen has held contract talks with Chelsea, but the two parties have not been close to an agreement.
He may also believe that a move to Dortmund would allow him to play regular football, as he is not always first choice at Chelsea.