Blues travel to fellow Sky Bet League One side in knockout stages of competition.
Southend United will travel to fellow Sky Bet League One side Peterborough United in the second round of the Checkatrade Trophy at the ABAX Stadium following the draw made on Twitter Friday (10th Nov) ahead of England's friendly against Germany at Wembley Stadium.
Blues made it through to the knockout stages after finishing second in the group behind Gillingham following a 2-0 home win against local rivals Colchester United.
The tie is expected to take place on Tuesday 5th December and we will confirm ticket prices etc. in the coming days.