Sochaux has secured the signing of promising young fullback Sebastien Corchia from Le Mans.
The 20-year-old, who made 80 appearances for his boyhood club across Ligue 1 and 2, has signed a four-year contract after completing a medical.
The France Under-21 captain becomes Sochaux's third new signing of the northern summer after the arrivals of Sebastien Roudet and Steven Mouyokolo.
Meanwhile, the club also announced new contracts for
Poujol, 22, has agreed new terms until 2014 and Butin, 23, has signed until 2015.