Tunisia forward Chaouki Ben Saada has signed for Lens from their French rivals Nice.
The 27-year-old has signed a two-year deal for an undisclosed fee, and has begun training with his new team.
He spent three season at Nice scoring nine goals for them and before that he was with his hometown club of Bastia.
The former France youth international has 37 caps for Tunisia and been to the Africa Cup of Nations three times with them as well as the 2006 World Cup.
Meanwhile Senegal's Boukary Drame is on the move away from France as he joins Italian side Chievo.
The defender has spent the last three season's with Sochaux but was unable to agree a deal to extend his contract with them.
Drame's compatriot Ousmane Gassama is currently on trial at newly-promoted Evian, the club has announced.
The 19-year-old striker arrives from Racing Club de Dakar.