Lyon are hoping to sign Jean-Alain Boumsong on loan from Juventus this week.
Boumsong has been linked with a January exit from Juventus after failing to force his way into Claudio Ranieri's plans on a regular basis.
The former Newcastle United centre-half was tipped for a return to the Premier League, but he now appears poised to join Lyon.
The French champions' president Jean-Michel Aulas confirmed talks are underway to sign Boumsong as a replacement for the injured Cleber Anderson.
"We are well advanced with a French defender who plays for Juventus, but as things are not signed, we can not confirm this," Aulas told the club's official website.
"I hope that this matter is concluded quickly, early this week."
Meanwhile, Juve coach Ranieri has hinted he could bring in a defender, with Lyon full-back Anthony Reveillere linked with a move to Turin.
Ranieri said: "We are talking about a defender. My job is thinking only about things on the pitch as there are other people who are working on the market situation.
"But I'm confident and I'm convinced we will do something."