Chelsea defender Toni Rudiger has turned down a fresh contract offer.

The Daily Mail says talks between Chelsea and the Blues' key defender over a contract extension have resumed, with the European champions eager to ensure Rudiger stays beyond his current deal that expires in the summer.

Rudiger, who currently earns in the region of £100,000-per-week, rejected the club's original offer - believed to be in the region of £140,000-per-week.

During the latest round of discussions, it is understood the club informally offered Rudiger a new deal worth closer to the £200,000-per-week mark.

However, it is understood the improved offer still falls short of what is required to persuade the Germany international to commit his future to the Stamford Bridge club.

The lines of communication between both parties are open with a view to finding a resolution, and Chelsea remain optimistic that they can strike a deal to keep their stalwart defender.

But it appears likely that they will have to make an increased offer to Rudiger to ensure they keep a player who head coach Thomas Tuchel views crucial to his plans.