Warnock brought in Walker for an initial month as cover after regular right-back Orr suffered a calf injury.
Orr is set to reclaim his spot now he is fit agan but Warnock has been so impressed with Walker he wants to keep him at Loftus Road.
"Kyle's a great player who can play at left-back, or in Shaun Derry's position, or at centre-back, so he's got a few strings to his bow," said Warnock.
"It would be nice to have him on board."
Source: PA
Source: PA