EDDIE O’Leary has ruled out the prospect of any Gigginstown Stud horses attempting to win the £1 million Chase Triple Crown which will be backed by the Jockey Club Racecourse again this year.

The bonus will be paid to connections of any horse who can win the Betfair Chase at Haydock in November, the King George Chase at Kempton in December and then go on to Cheltenham to win the Gold Cup in March.

Gigginstown have plenty of options in the staying chaser division but O’Leary is not keen to get involved.

“We’re happy enough to stay in Ireland with our horses, to be honest,” he said. “If they want to attract Irish runners why don’t they give an option of another first leg in Ireland. It could be the JNwine.com Chase at Down Royal, which is still in Britain anyway.”

The JNwine.com Chase takes place on the first weekend in November, usually three weeks before the Betfair Chase at Haydock.

One Irish horse that will be taking on the challenge is Jessica Harrington’s Sizing John. The seven-year-old completed an unprecedented treble last season by winning the Irish Gold Cup, Cheltenham Gold Cup and Punchestown Gold Cup and will aim for another huge treble this term.

Harrington said: “Ever since Sizing John won at Punchestown we have had the Triple Crown on our minds. He looks fantastic and we are really keen to have a crack at the bonus which is a great extra incentive.”

Sizing John could clash with Nicky Henderson’s Might Bite at Haydock. Last year’s RSA Chase winner would also have won the Feltham Chase over the King George course and distance but for a last fence fall and bookmakers rate him as short as 4/1 for the senior event back at Kempton this year. Cue Card came so close to winning the bonus two years ago and Colin Tizzard has indicated 11-year-old will be back at Haydock for another try.

The bonus has been backed by the Jockey Club Racecourses for a third year in a row. The seven-figure sum would be split between connections, with 65% going to the winning owners, 15% to the trainer, 10% to stable staff at the winning yard and 10% to the jockey, split a third per race if different jockeys ride the horse.