Lille are in talks with Swansea over a deal to sign midfielder Leroy Fer, Sky Sports News understands.
The 29-year-old Swansea captain is one of the most influential players at the Sky Bet Championship club, but his contract is up at the end of the season.
Fenerbahce, who currently have Swansea's Andre Ayew on loan, are also reportedly keen on a deal for Fer.
The Netherlands international has made 90 appearances and scored 10 goals since signing for Swansea from QPR for £8m in 2016.
Fer is one of a number of Swansea players who could leave the Liberty Stadium before Thursday's transfer deadline.
Earlier this window, Sky Sports News reported Swansea are close to agreeing a deal to sell striker Wilfried Bony to Qatari club Al-Sadd.
Bony is Swansea's highest-paid player and the club would like to get him off their books to continue their on-field restructuring programme following relegation from the Premier League last year.
Leeds are also reportedly keen to sign Wales winger Daniel James from the Swans.