Ford, who was released by United in the summer has been left with out a Football Club until Ian Atkins signed the Ex-U's player.
Bobby Ford was signed by Nigel Spackman in January sales of 1997 for £400,000 when Oxford United went into administration and where forced to sell key players for cheap by the admnistrators.
While at Bramall Lane Bobby made 138 league appearances with 6 goals.