The figures shown are based on how fans have been betting on the various markets.
Betfair spokesperson Sam Rosbottom said: “We’re almost halfway through the season and Leicester City are just a couple of points away from the summit of the Premier League table while the top four is just outside of Chelsea’s reach.
“A welcome win for Frank Lampard’s side is the most likely outcome according to punters on Betfair Exchange, who give Chelsea a 40% chance of winning, while victory for Leicester is 33% likely and a draw is 28%.
“Chelsea and Leicester’s matches this season have been competitive, high-scoring affairs and that theme is set to continue at the King Power on Tuesday, with over 2.5 goals scored in the match looking likely as Betfair Exchange punters give this a 54% chance of happening, while fewer than 2.5 goals is 49%.
“Timo Werner has struggled in front of goal this season but is Chelsea’s best hope of scoring with a 40% chance, while Tammy Abraham is 38% and Olivier Giroud is 36%.