Found given a tricky draw for Arc showdown at Chantilly

The top-class filly is one of three runners for the Ballydoyle handler as she aims to improve on a run of five consecutive runner-up finishes in Group One events, including a narrow defeat to Almanzor in the Irish Champion Stakes at Leopardstown earlier in the month.

She faces 15 rivals in Europe's premier middle-distance event as she lines up under Ryan Moore

Stable companion Highland Reel is next door in stall 11 for Seamie Heffernan and Gold Cup hero Order Of St George, the mount of Frankie Dettori, is widest of all in stall 16.

"Found is in good form. We've been happy with her since Leopardstown and everything has gone well," said O'Brien.

"Order Of St George is also in good form. We were happy with his last run, other than he didn't win. We've been happy with him since and obviously any ease in the ground he gets will suit him.

"Highland Reel is probably ground independent. He doesn't mind fast ground or an ease in the ground. He ran well at Leopardstown last time."

Harzand provided Dermot Weld and Pat Smullen with their first taste of Investec Derby glory at Epsom back in June and followed up in the Irish equivalent the following month.

He was found to have suffered an injury after disappointing in the Irish Champion and Smullen is hopeful he can bounce back from stall six.

"He's got some healing power, the way he recovered from his bruised foot at Epsom to win the Irish Derby and again he recovered from being struck into in the Irish Champion Stakes," Smullen told At The Races.

"Those little things don't seem to affect him, he's able to take it.

"It's a bit tight on the turn and it's a short straight so there's a fear of congestion, but there's a long run down the back to sort yourself out.

"If anything it's more demanding than Longchamp so if anything that should suit our horse.

"Postponed is the stand-out horse, his form is rock-solid. No matter what the ground is or 10 or 12 furlongs, he's a proper horse and the one we have to beat."