Wolves defender Steven Mouyokolo has moved to Sochaux on a season-long.
Mouyokolo passed a medical on Wednesday morning before agreeing a deal that Sochaux can make permanent at the end of the season.
"The FCSM has registered their second arrival with the loan of Wolverhampton Wanderers central defender Steven Mouyokolo,'' a statement on the club's website read. "He will be officially presented on Wednesday afternoon.
"Mouyokolo committed to the club this morning after a meeting and successfully completing his medical. The central defender, who turned 24 on January 24, is on loan with option to buy.''
Mouyokolo moved to Molineux from Hull last summer but his first-team opportunities were severely limited. He will now return to France, where his impressive form during short spells at Gueugnon and Boulogne saw him signed by then-Hull boss Phil Brown in 2009.
The Congolese-born Frenchman becomes Sochaux's second summer signing after the club completed a deal to sign midfielder Sebastien Roudet from Lens.
Mick McCarthy said: "We saw huge potential in Steven but he has had injury problems that have limited his opportunities.
"But he is fit now and wants to play so it seems a good idea to let him go to France for a season and get some regular football under his belt."
Meanwhile, Wolves will have to increase their offer for Reading defender Matt Mills to around £4 million if they want to secure his signing. They have offered £3 million for 24-year-old Mills who is believed to be keen to move to Molineux.
But the Royals are adamant any interested club will have to match their valuation before they consider letting Mills leave.
Reading skipper Mills will not force the issue by asking for a transfer, and Royals boss Brian McDermott wants to keep a player who has been offered a new contract by the Berkshire club. But it will still not match what the former Doncaster player could command by signing for Wolves for whom a centre-back is a priority this summer.
Jody Craddock, who will be 36 next month, has signed a new one-year deal and his experience is regarded as being an important factor in a young squad. But Wolves manager Mick McCarthy is aware of the need to stop conceding the kind of soft goals which almost cost the club their Barclays Premier League status last season.
Mills has also been linked with a move to Blackburn and Stoke.