PSG and Madrid are monitoring Chelsea defender Rudiger situation

Chelsea have opened talks with Antonio Rudiger over a new contract but remain cautious over his demands, as per Goal.com.

The defender's current deal expires at the end of this season and he can agree on a pre-contract with a foreign club after January.

Reportedly, Real Madrid and Paris Saint-Germain are keeping tabs on the centre-back's contract situation.

Goal adds that Rudiger would be happy to stay put in Chelsea as long as his contract demands are met - however, the Blues might not meet those demands with talks still going on.

Madrid and PSG can offer 'competitive salaries' to the player and both are keen on enforcing their centre-back position.

Rudiger's exact demands have not been specified but it is reported that he wants a pay rise after his superb performances under Thomas Tuchel.