Dettori, who would have been aboard the triumphant Treve 12 months ago but for suffering a foot injury four days before the Arc, is the man wanted for the 2013 Derby winner by Sheikh Joaan Al Thani, whose two more fancied contenders in the betting, exciting Prix Niel winner Ectot and 2014 disappointment Treve, will be partnered by Gregory Benoist and Thierry Jarnet.
Ruler Of The World, given an expert ride by Dettori when an all-the-way winner of the Prix Foy, is a best-priced 16-1 for the Arc, just under half the price of 33-1 shot Chicquita, who finished second under intended Longchamp partner Joseph O’Brien in the Blandford Stakes on her Ballydoyle debut.
Harry Herbert, spokesman for Sheikh Joaan's Al Shaqab Racing operation, said on Sunday: “If Chicquita runs - and I believe that is the plan - I think Frankie is sure to ride Ruler Of The World, with Joseph on Chicquita."
Al Shaqab share ownership of Ruler Of The World with Coolmore, and Herbert continued: “We want Frankie to ride him - I thought he was impressive on Ruler Of The World last time.”
Free Eagle and Australia were the biggest names to be missing after 20 horses went forward following yesterday’s first forfeit stage.
Taghrooda remains favourite with most firms and is one of three remaining British-trained entries, alongside St Leger winner Kingston Hill and Al Kazeem.
The home defence is set to be led by title holder Treve, who completed her preparation under Thierry Jarnet on a fog-bound piste des Aigles yesterday morning.
Trainer Criquette Head-Maarek said afterwards: “Thierry was very pleased with her. She worked 2,200 metres [1m3f] so a little further than before. She is coming on very well because before the Vermeille she was rusty.”
William Buick has picked up the ride aboard significant German challenger Ivanhowe, last seen defeating Sea The Moon in the Grosser Preis von Baden.
Christophe Lemaire suffered an injury scare at Maisons-Laffitte on Monday but is not concerned about his fitness ahead of the Arc meeting.
The French jockey sustained a slight leg injury in a fall at the Paris track but is not in action again until Friday.
“I’m just sore in the leg but it’s not a problem,” he said.
Meanwhile, connections of Sole Power anticipate a “very serious run” in the Prix de l’Abbaye after Tiggy Wiggy and Muthmir were ruled out of Sunday’s Group One at Longchamp.
The Eddie Lynam-trained Sole Power has already confirmed himself the king of the five-furlong division with scintillating displays in the King’s Stand at Royal Ascot and the Nunthorpe at York during another glorious summer campaign.
Tiggy Wiggy emerged a serious rival after another runaway victory in the Cheveley Park Stakes at Newmarket on Saturday, but trainer Richard Hannon has now drawn stumps for the campaign with the star filly.
Tiggy Wiggy’s defection paved the way for Richard Hughes to again receive the leg-up aboard Sole Power after the champion jockey delivered the goods in the King’s Stand and the Nunthorpe this summer.
Bookmaker Paddy Power, son of Sole Power’s owner, Sabena, said: “’I’m delighted with the defections of Tiggy Wiggy and Muthmir.
“Not only because they represented serious threats to Sole Power, but, with the former missing, Richard Hughes is definitely free to ride, which eases one of the concerns before a huge race.
“He and Sole are simply a match made in heaven and I’m expecting a very, very serious run.”
Another horse who will not be making the trip to Longchamp is Henry Candy’s star sprinter Music Master.
Winner of the Hackwood Stakes at Newbury and last seen finishing third in the Sprint Cup at Haydock, the four-year-old’s racing shoes have been hung up for the season.