Tony takes first steps into cup action.
U's: Walker, Lewington, Hewitt, Clohessy, Gordon, Kent, Eastman, Okuonghae, Gilbey, Fox, David Wright, Drey Wright, Moncur, Eastmond, Szmodics, Sears, Massey, Watt, Healey
The match costs just £10 per adult to get in, so come and join us on Tuesday for a great night of cup football.
The U's received a bye to get to this stage of the competition, whilst the Gills beat Stevenage 1-0 in the First Round.
The new faces are joined in the squad by Magnus Okuonghae, who completed his four match ban when the U's travelled to Preston at the weekend, and Sammie Szmodics, who has missed the last two U's matches.
The U's squad could include David Fox and Elliott Hewitt, should their paperwork from Monday's moves be completed in time.
Colchester United venture into Johnstone's Paints Action for the first time this season, as they host Gillingham in the Weston Homes Community Stadium on Tuesday night.