Simon King, Garry Richards (both ankle) and captain Barry Fuller (broken nose) are ruled out of the final two games of the season, while Darren Dennehy has returned to parent club Cardiff after his emergency loan deal expired.
Josh Gowling could be in line to fill in at centre-back after completing his two-game suspension but he will have to battle it out with youngster Tom Wynter for the vacant starting berth.
Jack Payne is expected to continue at right-back in the absence of Fuller after impressing in the last two games.
Top scorer Simeon Jackson could return to the starting XI after being on the bench for the Gills' last three fixtures.
