Andre Fabre believes Palace Pier "sets the standard" in the Prix Jacques le Marois at Deauville on Sunday.
Fabre, who has won the Marois a joint-record seven times, is set to run Victor Ludorum, who returned to winning ways in Group Three company last time out.
John and Thady Gosden's Palace Pier won the race last year, and, while he missed the Sussex Stakes due to a blood disorder, he has already won the Lockinge and Queen Anne Stakes this season.
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Poetic Flare, who is also due to run, is the leading three-year-old miler, but Jim Bolger's charge was beaten in the Sussex by Alcohol Free last time out, his third defeat of a busy season in which he has won the 2000 Guineas and St James's Palace Stakes.
"He's going to run, he won nicely last time and if the ground dries up that will help him," said Fabre of Victor Ludorum.
"It will have helped his confidence winning last time out. I'm quite confident he's going to run well.
"I haven't been that impressed by the three-year-old generation this season, to be honest - so I think Palace Pier remains the one to beat.
"I know Jim Bolger really likes his horse, but he's a bit up and down. On his good days he is very good, he was very impressive at Royal Ascot but he has obviously been beaten a few times, too.
"Because of that I think Palace Pier sets the standard to aim at."
Bolger could also run his Irish Guineas winner Mac Swiney.
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Jessica Harrington's Alpine Star was second last year and is set for another crack, Richard Hannon is represented by Chindit and Aidan O'Brien has left in Mother Earth and Order Of Australia.
Marianafoot, winner of the Prix Maurice de Gheest at the weekend, has been taken out by Jerome Reynier.