Gillingham could face Manchester United at home in the FA Youth Cup – but a big challenge awaits first. The Gills’ under-18s were due to meet Sunderland in the cup competition tonight (Tuesday) but the game was called off on Monday amid fears that the Priestfield pitch will be frozen. Winners of the game between the Gills and Sunderland will meet either Swindon Town or Manchester United at home in the fifth round of the FA Youth Cup. It’s a big incentive for both teams and the fourth round tie at Priestfield has been rescheduled for Tuesday, January 23 (7pm). With temperatures dropping, the Gi…