“The big one for me at the moment is Clint Hill because he’s been there a long time," he said. “Last season it was also Joey and Rio, but they’re not there now.”
Barton is now playing for Burnley, while Ferdinand has retired from professional football..
Furlong is currently taking in a loan spell at Northampton Town, which has recently been extended, as he starts to adapt to playing competitive football regularly.
The 18-year-old has been a key part of the Cobblers team, and he has impressed in League Two with his resolute defending - helping the club into eighth spot in the fourth tier standings, just outside the play-off places.
That will be encouraging for QPR, who have high hopes for Furlong's future at Loftus Road.
The academy graduate was given three appearances in the Premier League last season, as the R's ultimately failed to avoid the drop.