The France international is currently recovering from thigh surgery, which has ruled him out of the World Cup.
Kante's contract is running down and will expire in June.
Revelo says Barca are now preparing a pre-contract offer for Kante to consider. The veteran is viewed by Barca as a successor for Sergi Busquets, who is set to leave in June for MLS.
Chelsea are holding back on offering terms until Kante proves his fitness.
