Sheffield Wednesday, Stoke City and Reading are reportedly interested in signing Moussa Sao in the summer transfer window.
Cedric Bakambu revealed that both Palace and the Swans were keen on a move for the striker during his Sochaux days before he went elsewhere.
Sebastien Corchia's move to Lille from Sochaux could be about to fall apart because of legal red-tape.
Ryad Boudebouz has suggested he is open to the idea of a move to Southampton this summer.
The French club are hovering on the edge of the relegation zone in Ligue 1, with Arsenal set to pounce for a cut price Sebastien Corchia if they do go down.