The Willie Mullins-trained six-year-old had been targeted at Cheltenham's Champion Hurdle earlier this month, trading as short as 8/1 in the days leading up to the festival.
With favourite Hurricane Fly also in the field Mullins opted to withdraw Un De Sceaux, whose toughest test to date came in a Grade Two contest at Gowran Park in February.
The gelding romped home by 16 lengths that day, with Ruby Walsh on board, to make it five straight wins over hurdles, to add to a pair of national hunt flat race triumphs.
Un De Sceaux has been an eye-catching winner in Ireland, with victory margins of 29 and 53 lengths respectively in the past, but is yet to race in England and his performance on Saturday will be of great interest to all connections.
Reve De Sivola could be another horse making his way to France, after finding conditions at Cheltenham too quick this month.
The Nick Williams-trained stayer, with three Grade One wins under his belt, was a disappointing eighth in the World Hurdle at Cheltenham.
And owner Paul Duffy is weighing up the options of Punchestown's World Hurdle next month and a trip to mainland Europe.
"He ran a good race at Cheltenham but the ground came up too fast for him," said Duffy.
"He certainly won't be going to Aintree. I think we'll be targeting the same French race again, but we'll keep an eye on Punchestown as well."
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