Man United beat Man City 1-0 in Sunday 's under 18 encounter . Callum Gribbin scored the winning goal at Moss Lane , Altrincham . The result leaves United two points behind leaders Middlesbrough . The 'real ' Manchester derby takes place at Old Trafford on Saturday .
Man United beat Man City 1-0 in Saturday 's under 18 encounter . Callum Gribbin scored the winning goal at Moss Lane , Altrincham . The result leaves United two points behind leaders Middlesbrough . The 'real ' Manchester derby takes place at Old Trafford on Sunday .