Chelsea defender Antonio Rudiger is dissatisfied with the contract offer on the table, according to Christian Falk.
The Germany international has been a regular starter for the Blues since Thomas Tuchel took charge as the manager in January.
He has been one of the Blues’ stand-out performers this year, but there is great uncertainty over his club future.
Rudiger will enter the final six months of his contract in January, and there has been no progress over a renewal.
The board have refused to meet his £200,000-a-week demands. They have yet to make an improved offer to him.
This could pave the way for Rudiger’s exit on a free transfer. He can sign a pre-contract with a foreign club in January.
Real Madrid, Paris Saint-Germain and Bayern Munich are among the leading clubs vying to land his signature next summer.
Los Blancos have already made contact with his representatives. They are ready to make a proposal at the turn of the year.