QPR are looking to complete a deal to sign left-back George Cox from Fortuna Sittard.
The Dutch club signed Cox, 23, from Brighton last year after he impressed during a season-long loan.
Now Rangers are looking to bring him back to England. He has two years remaining on his contract.
Manager Mark Warburton is keen to bring in a right-back and a left-back this summer, with Todd Kane facing the axe.
Clubs are aware of Kane’s availability but so far no offers have been received.
Moses Odubajo will be signed as Kane’s replacement if he proves his fitness during a pre-season trial.
Odubajo is a free agent after recently being released by Sheffield Wednesday at the end of his contract and has been invited to train with Rangers.
The 27-year-old has previously struggled with knee problems and made just 18 league appearances last season, the most recent of which was on 1 January.
But he is well known to Warburton, having played under him at Brentford.
QPR are still attempting to negotiate a deal to sign Stefan Johansen from Fulham.
That process was always likely to be protracted – and has been held up further by the expected departure of Fulham manager Scott Parker and likelihood that his replacement will want to assess the squad.
Rangers are also looking to sign a back-up keeper and allow Liam Kelly to leave.
Kelly is wanted by Motherwell, where he was on loan last season, and Dundee United.
The Scot has indicated that he does not want to return to west London to act as cover for first-choice keeper Seny Dieng.
Tom Carroll has left the club. He rejected the offer of a new deal and talks with the midfielder have ended.