Foot Mercato says PSG officials have met with Rudiger's brother and agent Sahr Senesie in recent days.
PSG made an attempt for Rudiger last January, but the Germany international resisted the approach to commit to the Blues.
The Parisians are now trying again with the aim of signing Rudiger next summer when he comes off contract.
PSG are speaking with Senesie about including a massive signing on bonus as part of the deal.
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