Leigertwood, 24 moved to Bramall Lane just over twelve months ago in a £600,000 deal from Crystal Palace but now skysports.com believe that their local rivals are lining up a bid for the former Wimbledon man.
Last season he made just 19 appearances in the Premier League; but spent most of the campaign sidelined through injury; and since Bryan Robson's appointment has featured in all four of the Blades games this season.
However that has not prevented the R's from showing an interested but they must act fast if they plan to complete a deal, the transfer window ends this Friday night.