MILLWALL will play Northampton for a place in the Johnstone's Paint Trophy area quarter-finals.
Northampton reached the second round with a 3-2 victory over Colchester and are currently in 11th place in League Two with seven points from five games.
Millwall and Northampton have met on 76 previous occasions, with the Lions holding the edge with 36 wins. There have been 16 draws.
The sides last met in March, 2009 in a League One match when Gary Alexander's goal gave Millwall a 1-0 at The Den.
After the completion of the second round the draw will merge to leave just northern and southern sections.
The ties will be played the week commencing October 5.
The full second round draw is: