Borussia Dortmund and Bayern Munich are both said to be interested in Chelsea centre-back Antonio Rudiger.
Rudiger has reportedly opened contract negotiations with Chelsea but the 27-year-old has been mentioned with a transfer away from Stamford Bridge.
Sky Sports have reported that the German is in negotiations over a new three-year contract, which also includes an option for a further year.
Antonio, whose current contract expires in the summer of 2022, had been in superb form for Chelsea before the season was halted by the coronavirus pandemic.
He has made 16 appearances for Chelsea this season, scoring twice, which has taken his total tally to six goals in 105 games.
After a successful stint on loan at Serie A side Roma, Rudiger left Stuttgart to join the Rome-based outfit on a permanent basis before joining Chelsea for £31.5 million move transfer fee in 2017.