Blues drawn against Championship side Millwall in the FA Cup third round
Southend United will face Millwall at home in the third round of the FA Cup with Budweiser.
The tie will be played the weekend of the 4th/5th January 2014.
Millwall, managed by Steve Lomas, are currently in 17th place in the Championship.
Blues knocked out Morecambe in round one before beating Chesterfield 3-1 on Saturday in round two at the Proact Stadium.
The two sides have met just once in the FA Cup, again a third round tie, with Blues coming out on top thanks to a 1-0 win in January 1993.
Ticket details will be announced in due course.