The fixture will take place behind closed doors at the Club’s Wast Hills Training Ground on Saturday 24 July.
This match replaces the cancelled meeting versus Oxford United and will kick-off at 11am.
Blues Head Coach, Lee Bowyer, and his First Team staff will be in attendance for the fixture against the Ammies before travelling to Sixfields for Blues’ game with Northampton Town that afternoon.
Tickets for the Cobblers clash remain on sale until 2pm today and will be available to buy on the day at Northampton.
An updated pre-season fixture schedule is below: