The Red Dragons are a game away from a home match with the Foxes - and and guaranteed six-figure pay day.
Tonight they face Newport County for the right to host Claude Puel’s team, and the BBC’s cameras, in early January.
They will be well-back at Rodney Parade in the all-Welsh replay and stand-in manager Graham Barrow wants his players to have no regrets in south Wales.
“Any footballer who pulls a pair of boots on wants to play against a Premier League team,” he said. "There's a big day on offer for the winner.
“It doesn’t make my job easier, but the motivation is already there that’s for sure.
“I don’t feel frightened by the prospect, I really think we’re ready for Tuesday as a team and as a club.
“We don’t want to miss this chance because there is a great reward for the winner, both clubs will know that and be desperate to get through.
“It was important for the players and everyone at the club to get back to winning ways on Saturday. It sets us up quite nicely.”