Anton Robinson was forced off towards the latter stages of Monday's 1-0 win over Rotherham carrying a knock and has not fully recovered, meaning he will miss out against the Gulls.
But fellow midfielder Andy Frampton returns from his three-match suspension following the red card received at Rochdale, while Charlie Lee has also recovered after illness.
Meanwhile, Bradley Dack (ankle) faces a fitness test on Friday having missed the last three matches.
League Two leaders Gills go into the clash knowing victory, or potentially even a draw, will guarantee a top-three finish depending on results elsewhere.
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