The Gills will be without marksman Danny Kedwell with the striker ruled out for another two weeks following a knee injury, as they seek a win which will probably guarantee them League One safety.
Boss Peter Taylor also has to do without long term injury victim Matt Fish and midfielder Chris Whelpdale is also missing from a side that has won 3 of it's last 5 outings.
Millers gaffer Steve Evans has no new injury or suspension worries and may welcome back Wes Thomas into his squad of 18 after a niggling thigh problem.
Mark Bradley is recovering after his knee surgery.
Rotherham still have aspirations of automatic promotion but will probably have to win at a ground that's been none too kind to them down the years, to close the gap on second placed Brentford.
However, a point tomorrow will guarantee Evans' men a place in the end of season play-offs.