Asked about his chances of taking Bentley to Loftus Road, Redknapp told Sky Sports News: "We'll see, I'm not sure what's happening with that one yet.
On Jenas, he added: "If he's fit he's a good player, JJ, so we'll have to see."
Redknapp, who confirmed that Chris Samba has passed a medical at QPR, has also been linked with moves for Stoke City striker Peter Crouch and West Bromwich Albion forward Peter Odemwingie.
On the strike duo, he said: "I don't know if the clubs want to sell them. Let's wait and see. We are maybe looking for a striker."
It has been suggested that Jamie Mackie could be used as a makeweight in QPR's efforts to land Crouch, but Redknapp insists he has no intention of parting with the hard-working winger.
Asked if there had been any interest in Mackie, he said: "I don't think so, no. Not that I know of. I don't think there are any offers for Jamie, no-one has mentioned anything to me."