The former Wolverhampton Wanderers man is currently not in manager Harry Redknapp's plans, though he has seen the bench due to injury crisis, he has already spent three months at Rotherham United this season.
Carl Robinson
"He's made it known to us that he'd like to come to Sheffield United," Neil Warnock told BBC Radio Sheffield.
"I spoke to Ronnie about him and he says he turned the season for them, he was an excellent acquisition. They wish they could have afforded him."