The Foxes, who defeated fellow Premier League outfit Watford in the last round, take on Steve Cooper's Sky Bet Championship side, following their success over Arsenal last time out in the competition. Leicester go into the clash as cup holders, lifting the famous trophy at Wembley last May.
Ahead of the first showdown with Forest in eight years, on Sunday (4pm kick-off), LCFC.com has all you need to know in one place...
Who's starring on LCFC Radio?
Ahead of the clash in Nottingham, 90 minutes before kick-off, Matchday Live begins on LCFC Radio at 2:30pm. Presenter Dan Bates will be joined by Gerry Taggart as the former City defender provides his thoughts on the tie, alongside plenty of pre-match content and interviews.
Then, from 3:50pm, live commentary begins with Chris Parrott alongside League Cup-winning former Foxes captain Matt Elliott. They'll provide live and free coverage throughout the encounter with Steve Cooper's men, before another half-an-hour of analysis, including Taggart, follows at full-time.
All pre and post-match programming can be found across @LCFC social media on matchday, while in-play commentary is also free on the dedicated LCFC.com Match Centre.
When does everything happen?
All the key matchday timings for Leicester City’s second FA Cup fixture of the season...
| Event | Time |
| Matchday Live begins on LCFC Radio | 2:30pm |
| Team news confirmed on @LCFC social media | 3pm |
| BBC One coverage gets underway* | 3:30pm |
| Live commentary on LCFC.com | 3:50pm |
| Kick-off | 4pm |
| Full-time | 5:50pm |
| Match of the Day on BBC One* | 10:30pm |
| Highlights on LCFC.com & LCFC social media | 12pm (Monday) |
* United Kingdom only
What happened last time against Forest?
Championship champions-elect Leicester City were eight points clear at the top of the second-tier table following a typically eventful 2-2 draw with Nottingham Forest at the City Ground in February 2014.
On 29 minutes, a defensive mix-up left home goalkeeper Karl Darlow stranded and allowed Jamie Vardy to put City ahead. A header from Jamie Paterson made it 1-1, before Andy Reid's penalty handed Forest a one-goal advantage.
After Paul Konchesky's red card for the visitors, Leicester won a spot-kick of their own, however, with Kevin Phillips seeing his effort saved. Undeterred, Leicester recycled the ball and Riyad Mahrez converted from close range with eight minutes to spare.
When can I catch match highlights?
Highlights will be available across the Club's digital channels - on LCFC.com and @LCFC social media - from 12pm the following day (Monday).
All times GMT.