League One and Two clubs - plus squads from some big Premier League clubs - have found out their Checkatrade Trophy opponents.
For the third season in a row, the group stages of the competition contains 16 invited category one academies, which this year includes Arsenal for the first time.
The 56-team tournament is divided into 16 groups, with League One and League Two teams pre-drawn into groups within the northern and southern sections by their proximity to other teams in the competition.
Each side will play all the others in its group once, with games settled by a bonus-point penalty shoot-out in the event of a draw after 90 minutes, before the 16 group winners advance to the knock-out stages.
Holders Lincoln City will compete in Group H in the Northern section, while Arsenal's first group includes Cheltenham Town, Forest Green and Coventry City.
West Brom Under-21s
Manchester City Under-21s
West Ham Under-21s
Forest Green Rovers
Swansea City Under-21s
Milton Keynes Dons