Leicester City fan Leigh Herbert will pocket a cool 25,000 pounds ($NZ54,300) if his team complete their fairytale run and win the Premier League title.
Herbert placed a five-pound bet on Claudio Ranieri's men to lift the trophy at the start of the season at odds of 5000/1.
The Foxes are five points clear at the top with 13 games left following Saturday's 3-1 win at Manchester City and the 39-year-old carpenter feels he is on the verge of a "life-changing" win.
Herbert, who placed the bet in August while on a camping holiday, has refused bookmaker William Hill's 3,200-pound cash-out offer.
"I am going to hang in there, I believe in fairytales," he said.