United's youngsters have booked a spot in the quarter finals of the Northern Ireland Milk Cup, where they will face Dublin's Cherry Orchard.
The Reds' progress was sealed by the 4-0 thumping of County Armagh on Tuesday evening, having hammered New Zealand's Otago by the same score on Monday.
Federico Macheda took his competition tally to three with a brace against County Armagh, slotting home two neat finishes after Matt James' powerful header had opened the scoring.
Joshua King added a late fourth to seal a last-eight berth against the Dubliners, who qualified through a 4-0 stroll against Otago and a default victory over Sevilla, who fielded overage players.
The sides meet on Wednesday evening at Ballymoney's Riada Stadium, kicking off at 6pm.