On His Own was beaten just a short head by compatriot Lord Windermere in a pulsating renewal of the blue riband at Prestbury Park in March and failed to get the race in the stewards’ room following a lengthy inquiry.
He disappointed on his only subsequent appearance in the Punchestown Gold Cup, but Boston Bob, also trained by Willie Mullins and owned by Andrea and Graham Wylie, took top honours to add to his victory in Aintree’s Melling Chase.
Gigginstown House Stud have a strong hand in the Grade One feature.
Gordon Elliott has entered last year’s winner Roi Du Mee and Don Cossack, while the Mouse Morris-trained First Lieutenant and Noel Meade’s Galway Plate winner Road To Riches are others in contention for the leading owners.
Don Cossack and Road To Riches are also among eight entries for the Powers Irish Whiskey Chase on the same card.
Gigginstown’s racing manager, Eddie O’Leary, said: “We’re keeping our options open and a lot of it will come down to the weather.
“I think one or the other of those (Don Cossack and Road To Riches) will run in the second-season novice race (Irish Whiskey Chase), but we haven’t decided which one yet.
“First Lieutenant is in the Charlie Hall and we’ll have to see what the weather is doing. We’ll have to make a decision on him tomorrow.”
The Paul Nicholls-trained Rocky Creek and Nicky Henderson’s mare Ma Filleule are the two potential British challengers in the main event.
Tom Mullins’ Klepht, Lyreen Legend from Dessie Hughes’ yard, Elliott’s Realt Mor and Liam Lennon’s leading top chaser Tammys Hill complete the dozen entries.