The left-back was forced off with an ankle injury during the second half of Saturday's 2-0 victory over Hartlepool, with Gregor Robertson - who stepped off the bench to replace him - again on standby if required.
Widdowson aside, Cobblers boss Chris Wilder will be tempted to stick with the same side who clinched a first home win since the end of November.
However, should he opt to freshen up his XI for a second game in four days then the likes of Alan Connell, Gary Deegan, Antonio German and Ian Morris are available. Skipper Lee Collins (foot) has been ruled out for the rest of the season.
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- Gregor Robertson
- Chris Wilder