United's second-string were due to face their Fishermen counterparts at Victoria Park, home of National League North outfit Chorley on Friday, 19th January but their penultimate Group F fixture was postponed due to ground availability issues.
However, the cup clash will now take place on Wednesday, 31st January and will be staged at Fleetwood's Highbury Stadium, with kick-off set at 7pm (GMT).
United's second-string, who reached the Premier League Cup final in 2019, currently occupy fourth spot in their respective group after recording two points from their opening four fixtures, holding Fleetwood to a 2-2 draw at Whitley Park in October.