Millwall will be at home to Leicester City in the Third Round of the Carabao Cup.
The two teams will meet after being paired in Wednesday night's draw.
The Lions and The Foxes have previous in Cup competitions, with the last fixture between the two taking place at The Den in February 2017, as Shaun Cummings scored a last-minute winner for Neil Harris' 10-man League One side against the reigning Premier League champions in the FA Cup Fifth Round.
Ties to be played in the week commencing Monday 20th September.
Full details, such as a confirmed date, kick-off time and ticket selling arrangements, will be confirmed in due course.