Oyonnax prop Laurent Delboulbès will be playing his rugby at the Stade Félix Mayol next season after signing for Toulon.
Delboulbès, 29, has signed a two-year contract with the three-time European champions.
The move comes with Oyonnax's relegation from the Top 14 at the end of this season all but confirmed.
Delboulbes joined Oyonnax ahead of the 2015/2016 season having previously spent four years with Bordeaux-Bègles. His former clubs also include Montauban and Carcassonne.
Toulon boss Bernard Laporte was quoted at the start of May saying that the club recruited poorly in the front-row ahead of the 2015/2016 campaign. More signings in that area therefore could be on the way.