The Cobblers have just one task at the ProKit UK Stadium and that is to avoid the upset that the televison schedulers are clearly hoping for against their opponents from the Skrill Conference South.
The Blues knocked out opposition from a higher league in the 4th Qualifying Round when winning at Forest Green Rovers and are also flying high in their own division.
That, of course, is in stark contrast to Town who go into the game at the foot of the Football League following yet another late heartache at Plymouth on Saturday.
Aidy Boothroyd's patience seems to have expired after the Devon defeat and he has promised changes, beginning with the cup tie.