Chelsea had scouts in the stands for Olympique Marseille's clash with Angers on the weekend.
La Provence says Chelsea were represented at the 1-1 draw, along with another unnamed English club.
Marseille defender Doria and Angers skipper Cheikh N'Doye have both been linked with Chelsea this year.
Also featuring for OM on the day were former Newcastle pair Remy Cabella and Florian Thuavin, along with on-loan Swansea City striker Bafetimbi Gomis.