Johnson finally collected his first win in charge against Stevenage last weekend, which secured the club`s Football League status, and he is unlikely to make many changes.
Michael Uwezu scored his first professional goal last week and will again partner Shaun Harrad in attack as a whole host of Cobblers players look set for their final appearance in the claret shirt.
Johnson is poised for a radical overhaul of the squad this summer and will again be without a number of injured players.
On-loan Doncaster defender Byron Webster picked up a hamstring injury against Rotherham on Good Friday while striker Leon McKenzie will also miss out with a thigh injury.
Fellow forward Billy McKay is now fit after a dislocated elbow but Guillem Bauza has a rib injury and goalkeeper Steve Collis has a thigh strain.
Source: PA
Source: PA