The national newspaper; Daily Mail has printed that Blades boss Neil Warnock is interested in the pair, both of whom have been targets in the past.
Having clinched promotion to the Premier League the Cutlers will launch a £2,500,000 bid for Shittu who joined Rangers from Blackpool after a successful loan spell in January 2002 and has gone onto to be a regular at Loftus Road.
However it is knowledge that the Hoops turned approaches for the Nigerian born skipper last January whilst Bircham has confirmed that similar approaches were also quashed by the London club.
It is now become apparent that the Loftus Road club have it financial difficulties and are willing to listen to offers to ease there financial burden.