The pair failed to impress during spells with Newcastle and Aston Villa, and return on loan to their home nation after suffering relegation in 2015-16
Saint-Etienne has announced the double signing of Henri Saivet and Jordan Veretout.
Both players return to France on season-long loan deals after short, underwhelming spells in the Premier League.
Senegal international Saivet joined Newcastle from Bordeaux in January, but made just four appearances as the Magpies suffered relegation to the Championship.
The 25-year-old is relieved his spell on Tyneside has come to an end and is relishing the opportunity to play again in France.