Nice winger Anthony Mounier has switched to Ligue 1 champions Montpellier on a four-year deal.
The 24-year-old has moved to the Stade de la Mosson for a reported €3.25million (£2.62m).
Montpellier beat St Etienne and Mounier's former club, Lyon - for whom he made 20 Ligue 1 appearances before he left in 2009 - to his signature.
He is the third player to join the champions this summer following the capture of defender Daniel Congre from Toulouse and attacker Gaetan Charbonnier from second-tier club Angers.
But the champions have lost star striker Olivier Giroud, with last season's Ligue 1 leading scorer joining English giants Arsenal.
Rene Girard's team are preparing for a crack at next season's UEFA Champions League after winning the French title for the first time in their history.