The Noel Meade-trained Disko© Photo Healy Racing
The Gigginstown House Stud-owned pair of Outlander and Disko are the two remaining Irish contenders for the 32Red King George VI Chase at Kempton.
Gordon Elliott's Outlander claimed his third Grade One success in the JNwine.com Champion Chase at Down Royal in November, but was then a long way behind Bristol De Mai in the Betfair Chase.
The Noel Meade-trained Disko made a successful reappearance in a Grade Two on the same Down Royal card and has not been seen in competitive action since.
Might Bite, Bristol De Mai and Thistlecrack also feature among the 10 confirmations for the St Stephen's Day feature.
Nicky Henderson's dual Grade One winner Might Bite is a hot favourite, while the Nigel Twiston-Davies-trained Bristol De Mai bids to follow up his remorseless front-running success at Haydock.
Bristol De Mai's connections will scoop a £1million bonus if he can add the King George and the Cheltenham Gold Cup to his victory on Merseyside.
Thistlecrack was a brilliant winner of last year's King George for Colin Tizzard, but returns to defend his crown with questions to answer after finishing well beaten on his return from injury in the Long Distance Hurdle at Newbury.
Tizzard has also confirmed Fox Norton, who looks set to tackle three miles for the first time after being narrowly denied over two miles in the Tingle Creek at Sandown recently.
Henderson has another string to his bow in the form of Whisper, who played second fiddle to Might Bite at Cheltenham and Aintree last spring, but has earned himself a rematch after going down fighting under a big weight in Newbury's Ladbrokes Trophy.
Double Shuffle (Tom George), Tea For Two (Nick Williams) and Traffic Fluide (Gary Moore) complete the potential field.
