19:00Manchester Total Sport - CommentaryFA Cup fourth round: Derby County v Manchester UnitedBBC Radio Manchester Duration: 3 hours Fri 29th Jan 2016, 19:00 on BBC Radio ManchesterFM and online (UK only): Bill Rice presents coverage from the FA Cup fourth round: Derby County v Manchester United (kick-off 7.55pm). DAB: Georgey SpanswickGenresSportBrandManchester Total Sport - Commentary Source: BBC Online