Ferdinand, who is the R’s director of football, was in attendance at Hasselbaink’s first press conference since he was appointed at Loftus Road yesterday.
"I think every player has got his price and I would not want to sit here and say Charlie Austin is definitely staying at this football club," Ferdinand said.
Austin has been linked with Newcastle United, Sunderland and Aston Villa in the Daily Star, with Premier League clubs circling.
The 26-year-old’s contract with the R’s is set to expire in the summer, and many top-flight clubs are hopeful of landing the forward at a cut-price.
Austin netted 18 times last season for QPR, when they were a Premier League club.
He remains a key figure at Loftus Road, despite their relegation, and Hasselbaink told the Daily Star that he was optimistic of keeping the forward.
"He's not going to be pinched," Hasselbaink insisted. "I'm looking forward to working him but everybody else here too. Everybody has to be part of it."
Austin has scored eight goals in 14 matches for QPR this term.