Leon Best will continue to train with QPR for the time being but the club are not planning to sign the striker.
Best, 28, is a free agent after his Blackburn contract was terminated by mutual consent this summer.
Rangers agreed to a request for Best to train with them, with head coach Chris Ramsey subsequently insisting it would have been “silly” not to do so.
Best also spent a month on loan with the R’s during the 2004-05 season, making five appearances.
He was then a Southampton player and went on to have spells at Coventry and Newcastle before joining Blackburn in 2012.
After spending the first half of last season on loan at Derby, where he made 15 substitute appearances in the Championship without scoring, he spent the second half of the campaign on loan at Brighton.
He made 13 appearances for the Seagulls, seven of them as a substitute – again without scoring.