David Bridgwater could turn to Tony McCoy for The Giant Bolster in the William Hill King George VI Chase at Kempton on Boxing Day.
Runner-up in the Cheltenham Gold Cup, the seven-year-old made a satisfactory return to action when third to Silviniaco Conti in the Betfair Chase at Haydock last month.
He was ridden on Merseyside by Tom Scudamore, who has been on board for eight of the gelding's last nine starts but would be required to ride Grands Crus for David Pipe should he take his chance.
Bridgwater said: "He's Tom's ride, but if Grands Crus runs he has to ride that, end of story. It's all up in the air, but I've been talking to (agent) Dave Roberts over the possibility of AP McCoy being free."
Barry Geraghty has yet to make a decision on whether he will partner Finian's Rainbow or Riverside Theatre.
Finian's Rainbow won the Queen Mother Champion Chase at last season's Cheltenham Festival, but struggled in heavy ground on his reappearance at Ascot in November.
Riverside Theatre, who finished second to Long Run in the King George two seasons ago, landed the Ryanair Chase at the Festival in March but has not been seen since he was pulled up at Aintree in April.
The Irish jockey told At The Races: "It's a very difficult call - you don't want to be offending anyone, either.
"Both were good winners at the Festival and I think both would get the trip. It's a very difficult one and we'll let it run to the wire."
26 November 2014BHA announces prize-money fillip
Grant handed six-month ban
McCoy makes winning return
Banned Fenton 'less than truthful'
National aim for Wyck
Hand up for Becher challenge
Meade admits Riches ground question
McCoy leaning towards Merry mount
Christmas aim for Owega
Walsh expecting bold Sceaux show
Smith sadness at Mania retirement
Cadeaux among Hong Kong hopefuls
Staying aims for Trev
Retirement for National hero Mania
Fenton lodges ban appeal
Knott found in breach of rules
No stopping Twiston-Davies
Bans for jockeys in flag drama
Djak experience a concern for Walsh
More headlines Long Distance field
Tributes flow for Lady Herries
McCoy returns at Fontwell
25 November 2014Void race drama at Sedgefield
Colombieres stars in Mullins entry
Bridgwater buoyed by Bolster
Trade ready to storm Hong Kong
Bowe ponders Robin Power play
Apache on the march for Drinmore
Pipe - Stamina key to Bally chance
Sacre not guaranteed for Sandown
Tower 'sore' after Navan spill
Spirit ensures more Henderson woe
Walsh praise for Vautour
Walsh cool on Faugheen odds
Victory team on weather watch
New relief for Twiston-Davies
Nicholls planning dual George raid
Leather in fine form ahead of Cup
24 November 2014Hobbs upbeat about Fingal raid
Fry keen for crack at Tolworth
Midnight to stay over hurdles
Creek seeking Hennessy Gold
Dynaste team consider George run
Topper target hinges on ground
Followme poised for Drinmore date
Balbriggan lands Troytown gamble
Vautour impresses on chasing debut
Un De Sceaux set for Thurles
Melodic team face tough choice
Henderson aims at Listed prize
Croco in frame for Topham
Deputy in Kempton firing line
McBratney banks on Boy progress
23 November 2014Balbriggan all the way
Vautour off to impressive start
Belle set for hurdling campaign
Silvi scraps to Betfair glory
Bally sparkles on Mullins' big day
Kelly's a Fixed Brush hero
Faugheen turns on the style
Fenton banned for three years
Amlin double for fab Ferof
New One excels in Haydock romp
Flyer grounds Ascot rivals
Vasco a cut above opposition