The game will kick-off against the Spartan South Midlands Football League Premier Division side at 7.45pm, with admission prices set at £6 for adults and £3 for concessions.
The Town reached this stage of the competition with a second-round win over AFC Dunstable, defeating them 2-0 at Creasey Park – with Josh Boorn and an own-goal giving Dan Walder’s side the win on the night.
It took a penalty shoot-out win over Kempston Rovers for Potton to get to the second-round, before defeating Barton Rovers 4-3 at The Hutchinson Hollow.
The address for Potton’s home ground is: The Hutchinson Hollow, Biggleswade Road, Potton, SG19 2LX.