Gleneagles has been declared to run in the Queen Elizabeth II Stakes at today’s Champions Day but is not certain to take part in the Ascot race.
The colt, winner of the English and Irish 2,000 Guineas, prefers fast ground and has been a late withdrawal from several races over the summer.
Trainer Aidan O’Brien says he will walk the Berkshire track on Friday evening.
If Gleneagles was to run, it would set up a fascinating clash with leading French contender Solow.
Irish Derby winner Jack Hobbs heads a field of 13 in the Champion Stakes after Cirrus des Aigles was pulled out, but must run from a wide draw in stall 12.
The Godolphin-owned ante-post favourite was second to stablemate Golden Horn in both the Dante and the Derby before winning at the Curragh.
Among his rivals on Saturday are 2011 winner The Corsican, Elm Park, Found and Racing History.
The £1.3m Champion Stakes is the feature race of British Champions Day – the richest day in British racing.
John Gosden, who trains Jack Hobbs, said: “When you put that kind of race on for that kind of money you’ll get a lot of really classy and tough horses.”
Frankie Dettori, who won the Prix de l’Arc de Triomphe on board Golden Horn earlier this month, will ride Ribbons.