Departing Walsall captain Andy Butler is being linked with a possible move to Sheffield United at the end of his Saddlers contract.30-year-old, Doncaster born Butler has been linked with switches to both his hometown side Doncaster Rovers and his first professional club Scunthorpe United, however reports suggest Sheffield United have moved to the head of the queue after the release of veteran Matt Hill and the potential departure of Harry Maguire.