Churchill is likely to swerve the Prix Jacques le Marois at at Deauville on Sunday in preference for a trip to York later in the month.
The dual Guineas winner was a late withdrawal from the Sussex Stakes at Goodwood last Wednesday due to the testing conditions, but he had been in the frame to head to France this weekend.
But trainer Aidan O'Brien is now favouring an assault on the Juddmonte International at York on August 23, for which he is the 4/1 second-favourite at Sky Bet.
He said: "We are looking at York with Churchill.
"It is not written in stone, but we are looking at going up to a mile and a quarter with him.
"The plan was to go to Goodwood and then go up to a mile and a quarter after that.
"If we were to go to France this week then we might not get a chance to go up to a mile and a quarter.
"If York went well then he may go on to Leopardstown (Irish Champion Stakes)."
Barney Roy heads Sky Bet's Juddmonte International market at 11/4 with Ulysses the other joint-second favourite with Churchill at 4/1.
"It's shaping up to be a fascinating contest," said Sky Bet's horse racing PR manager Michael Shinners.
"Barney Roy and Ulysses have a score to settle following the Eclipse and when you throw Churchill into the mix as well it has the makings of a great race. Hopefully they all get there."
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