QPR midfielder back training with the youngsters
Barton is currently serving a 12-game suspension as a result of his sending-off against former club Manchester City on the final day of last season and has no long-term future at Loftus Road.
He has been stripped of the captaincy, not been given a squad number and recently trained with Football League new boys Fleetwood Town.
A move to French giants Marseille had been mooted and Barton had initially been keen on exploring the option of a switch to Stade Velodrome.
However, the 29-year-old is now back training with QPR's youngsters after expressing his disappointment that a deal with Marseille looks unlikely.
Barton wrote on Twitter: "Doesn't look like this Marseille thing is gonna happen now. 'Whatever doesn't kill you make you stronger' #heartbroken"
Sky Sports revealed on Monday that QPR are ready to offer Barton, who has three years left on his contract, a free transfer in order to facilitate a move.
It now remains to be seen whether a deal will materialise for Barton, who scored three goals in 31 Premier League appearances last season after joining QPR from Newcastle United.
