Iain Williamson will referee the Iron's away clash with Swindon Town this Saturday.The Berkshire official last took charge of a match involving United when Mark Robins' side were 4-1 victors over Leyton Orient last season.
Throughout the last campaign he produced 54 yellow and two red cards, including two bookings in that match involving the Iron.
This season, Williamson has shown 46 yellows and dismissed three players, with his most recent dismissal coming in last weekend's match between Fulham and Birmingham.
He will be assisted on Saturday by linesmen Akil Howson and Mark Howes, while Christopher O'Donnell will be the fourth official.
Tweets by @SUFCOfficial