However, he turned out for the reserves in midweek and is now in contention to face the Spireites.
Midfielder Neil Wainwright may also be included in the squad again after also playing in the reserves on Wednesday.
McIlroy has no other injuries or suspensions as the Shrimps seek to extend their unbeaten run to three games and enhance their play-off prospects.
Meanwhile, McIlroy has admitted it is unlikely Morecambe will bring in any new players before the transfer deadline on Monday.
Source: Team Talk
Source: Team Talk