When: Saturday, May 15, 17:15 BST
How to watch: BBC One
Is this the game which marks the start of a double winning season for Chelsea? Or is this the game in which Leicester end their four-match losing run in FA Cup finals? That, of course, is the £1.8million pound question.
Leicester, on the other hand, are currently priced at around the 16/5 mark. That is a fair price considering the Foxes are in decent form but not exactly flying.
Last Three Matches
Leicester 2-0 Chelsea (Premier League - January 19, 2021)
When the two sides met earlier this season, it was Leicester City who came out victorious.
First-half goals from Wilfred Ndidi and James Maddison sealed the victory and all three points for Brendan Rodgers' side.
Chelsea did have a goal disallowed for offside in the 86th minute but in the end, Frank Lampard's men went back to London empty handed.
Leicester 0-1 Chelsea (FA Cup - June 26, 2020)
A sole goal from Ross Barkley helped Chelsea seal a place in the 2020 FA Cup semi-final.
Leicester enjoyed more goal attempts and created more dangerous attacks but ultimately, they came up short against a clinical Chelsea side.
The Blues ended up going all the way to the final however, they were unable to beat the Gunners at Wembley.
Leicester 2-2 Chelsea (Premier League - February 1, 2020)
After a dull opening 45 minutes, this game eventually came to life and produced a thrilling four-goal encounter.
Antonio Rudiger opened the scoring in the 46th minute however, Chelsea were soon pegged back by a goal from Harvey Barnes.
Ben Chilwell put the Foxes in front in the 64th minute as Leicester seemed on track to take all three points.
However, just a few minutes later, Rudiger grabbed his second goal as Chelsea held on for a draw.
Last ten head-to-heads
Chelsea wins: 4
Leicester wins: 2
Chelsea goals: 11
Leicester goals: 8
Thomas Tuchel the history-maker
Even though there have been 139 previous FA Cup finals, there's never been a German manager to lead his team out ahead of this famous fixture.
That's going to change this Saturday when Thomas Tuchel finally ends that near 140-year drought.
Upon his arrival, few would have expected the Blues to be battling for a potential season-double. This weekend, Chelsea can take one big step to making this a reality.
Leicester's missing men
One key absentee for the Foxes is Harvey Barnes. The youngster has been a revelation this season and his shoes have certainly been hard to fill.
Another player who won't be playing in this final is James Justin. The full-back would have been in contention for a possible England call-up if not for his season-ending knee injury.
The third man who must be mentioned is Jamie Vardy. The former England international isn't injured but his run of two goals from 17 games suggests he's far from his best.
Vardy, who has played in every round of this competition, will be looking to rediscover some form and help the Foxes to their first FA Cup crown.
Kelechi Iheanacho is Leicester's in-form goalscorer and what's more, he's scored the opening goal in the three previous rounds of this competition.
The Nigeria international is currently well priced at 13/5 to score anytime with PaddyPower.
Another man to watch is Christian Pulisic. The American has bagged five goals in his last 12 appearances and could prove to be a threat in this final.
The 22-year-old is priced at 9/4 to score anytime with SkyBet.