The tie is scheduled to be played over the weekend of 24-27 January 2020. Further match and ticketing information will be announced in due course.
We booked our spot in Round Four with Saturday's 1-0 victory over Stoke City at Griffin Park; Emiliano Marcondes netting the only goal with a fine free-kick.
The Foxes, who currently sit second in the Premier League, made it through to Round Four with a 2-0 win at home to Wigan Athletic.
It's been nearly 30 years since we last met City in a competitive fixture. That was a Division One fixture in January 1993 with our last home victory over The Foxes coming in 1952.