O’Neill will have a number of selection dilemmas for the final qualifier.
The injured Shea Charles and Ali McCann are both still missing in midfield, and George Saville will join them on the sidelines through suspension with his late yellow card against Slovakia his second of the campaign.
Daniel Ballard will also sit out that game after his even later dismissal in Kosice.
In the forward line, Dion Charles was taken off at half-time and his replacement Jamie Reid also limped off in the second half.
That could leave O’Neill with just three options up front for Monday. Josh Magennis is the natural choice, and he came off the bench in the second half in Slovakia.
Jamie Donley replaced the injured Reid and played alongside Magennis, while Callum Marshall, who has often featured out wide for Northern Ireland, could get a shot in his more natural central forward role.
“I have said in the past that I would like to see Callum Marshall get a chance,” said former Northern Ireland defender George McCartney.
“He is a natural goalscorer, a clever player, and come Monday it is a possibility he could play.”
Other youngsters who may get a chance to shine are midfielder Jamie McDonnell, who O’Neill said he was close to selecting in Slovakia, Barnsley’s uncapped former Coleraine star Patrick Kelly or defender Terry Devlin, who recently scored twice for Portsmouth.
If selected, they’ll all have a lot to prove.
