The 26-year-old has made 35 appearances for the Us since joining from Carlisle last year but has not featured since the 7-0 FA Cup defeat by Preston in January.
Defender Laurence Wilson is also available again after being ruled out for two games through suspension after picking up 10 bookings.
McIlroy has no fresh injury or suspension concerns and is not expected to make many changes to the side which lost 1-0 at Bournemouth last weekend.
Source: Team Talk
Source: Team Talk