The QPR midfielder spent last season on loan at the Stade Velodrome as les Phoceens finished second in Ligue 1 and qualified for the Champions League in the process
|16/1||Marseille are 16/1 with BetVictor to win Ligue 1
"Joey Barton's comeback? I do not know how it will evolve," he told L'Equipe.
"The club and the player agreed about the challenge ahead, but he still belongs to QPR."
Barton himself has spoken of his desire to return to Marseille following a stint that saw him make 28 starts in all competitions in France, scoring once.
The former Newcastle United and Manchester City player, 30, still has two years left on his current deal at Loftus Road.