The new manager of the Pirates has lost both Cian Bolger and Matt Lund this week after the on-loan pair returned to Leicester and Stoke respectively.
And in addition to the return of Kenneth, back after a one-game ban, the former Cheltenham boss hopes to bring in another new face before kick-off.
Striker Dave Clarkson missed the vital 2-1 win over Plymouth with a swollen ankle and the visit of the high-flying Gills is expected to come too soon for the former Motherwell man.
Recently-released Aldershot striker Guy Madjo is currently training with the Rovers squad for two days as Ward assesses the former Plymouth and Bristol City attacker.
John Ward remains without long-term injury absentees Scott Bevan (wrist), club captain Matt Gill (knee) and Matt Harrold (knee) while defender Adam Virgo is also out.