The Cameroon international demanded to be allowed to move to Goodison Park earlier this month and claimed he was the subject of an offer worth around £5m.
One stumbling block to any deal is that the defender appears to have returned from China with a knee injury which needs a scan and there is little chance of a move being completed whilst he is injured.
"I haven't changed my mind, I want to join Everton," Mbia said in L'Equipe. "We are still in contact. I hope now that Rennes will accept to enter into negotiations with this English club."
He added: "I don't want to let this chance go by."