Tapestry has emerged a possible challenger for the Prix de l'Arc de Triomphe after French racing authority France Galop said she could be supplemented for the race.

The addition of Aidan O'Brien's filly, who lowered the colours of Arc ante-post favourite Taghrooda in the Yorkshire Oaks in August, is likely to pave the way for Ryan Moore to take the ride at Longchamp on Sunday.

France Galop tweeted yesterday: “The possible supplementation of Tapestry would allow Ryan Moore to maybe ride in the Arc.”

The final chance to supplement for the Arc is this morning, when connections must pay €120,000 to add her to the field.

Despite having claimed the scalp of Taghrooda on her penultimate start, Tapestry will be sent to France on a redemption mission following a subdued run in the Matron Stakes at Leopardstown last month, when she finished ninth.

Another piece of the Arc jigsaw slotted into place earlier in the day when Frankie Dettori was confirmed as rider of the O'Brien-trained Ruler Of The World.

It had been feared the Italian, who missed the winning mount on Treve 12 months ago at Longchamp and has been replaced on the filly by Thierry Jarnet, would be forced to watch from the sidelines once again this Sunday.

There was speculation over which jockey would get the nod on O’Brien’s 2013 Derby hero, although three-times Arc winner Dettori had been in the saddle when he registered his victory in the Prix Foy.

Al Shaqab Racing, which retains Dettori, is

part-owner of the Galileo colt along with the Coolmore partners. O’Brien’s son, Joseph, had ridden him on his previous start in the Dubai World Cup.

Dettori's agent Ray Cochrane said: "Frankie told me this afternoon he's riding the horse, and hopefully he'll have plenty more rides through the day."

O’Brien is also due to be represented by Chicquita, the intended mount of the trainer’s son, Joseph.

There was a great deal of interest from the Japanese media at Chantilly earlier in the day, when Naosuke Sugai’s two runners had a racecourse gallop.

Just A Way (Yuichi Fukunaga), who was the highest-rated horse in the world after his devastating performance in the Dubai Duty Free, worked alongside Gold Ship (Norihiro Yokoyama), with the former pushed out to finish slightly ahead.

James Doyle had been at Roger Charlton's stable in Wiltshire to ride Al Kazeem, whose participation was confirmed by the Beckhampton handler.

The multiple Group One winner, sixth last year, has subsequently returned to training after a failed attempt at stud.

"James Doyle rode him. He was very happy with him so we'll send him to Paris," said trainer Roger Charlton told At the Races.

“He seems to take his races very well. In the paddock before a race he’s very relaxed, he looks magnificent

. . . He’s very willing and able in his work.

“I think the truth is, as he’s a year older he’s unlikely to have got any better and he needs to get better to win a race like the Arc. Last year we were given a very awkward draw and nothing was going to be good enough to beat Treve last year. I’m not sure that’s the same this year.

“It’s a very open race and you could find half a dozen horses at least with chances. There’s nothing outstanding.”

Likely outsider Shamkala was the only horse to drop out of the field at the latest forfeit stage.