Ben Gladwin has returned to QPR because of a persistent knee problem.
The midfielder has made just one appearance for Bristol City since agreeing a loan move six weeks ago.
The loan deal cannot be formally terminated, but Gladwin could need an operation and appears to be facing a lengthy spell on the sidelines.
He returned to Rangers to have the problem treated earlier this month and was given the all-clear to go back to City, who signed him for the rest of the season.
But Gladwin is still struggling with pain in his knee and is again being looked at by QPR’s medical staff.
Gladwin was signed from Swindon Town last summer and returned there on loan in October after making just two league appearances for Rangers.
He was recalled soon after Jimmy Floyd Hasselbaink was appointed manager at Loftus Road so that the Dutchman could assess him.
The 23-year-old former Hayes & Yeading player featured in the FA Cup defeat against Nottingham Forest and was promptly loaned out again.
Meanwhile, Hasselbaink has said Tjaronn Chery showed good attitude prior to his recall to the QPR side.
This post was last modified on 01/03/2016