Camelot could return to action in either the Juddmonte International Stakes at York or the Red Mills Irish Champion Stakes at Leopardstown.
He told At The Races: "He's in good order. He's back after a break and he's starting to progress. York and Leopardstown would be the two main races that could be possible. The Juddmonte is a great race and the Irish Champion is a great race, but it will depend on how he comes along. Things are going well so far."
Stablemate Kingsbarns is also nearing a return to action. The high-class colt has not been sighted since winning the Racing Post Trophy at Doncaster last October.
O'Brien said: "Everything is good. He's moving great and is in full work. He could be exciting if he comes back. He could turn up at the Curragh for the Royal Whip (August 11), or he could have a racecourse gallop, or he could go straight to Leopardstown (Irish Champion Stakes)."
O'Brien regrets running Ruler Of The World in the Dubai Duty Free Irish Derby after his triumph in the Epsom equivalent. The Galileo colt lost his unbeaten record at the Curragh when only fifth of nine behind Trading Leather.
Races like the Prix de l'Arc de Triomphe may still be on his agenda, but the Ballydoyle handler feels he should have taken more notice of what Ryan Moore told him after his success in the Epsom Derby.
"We shouldn't have ran him. Ryan said after Epsom he had a tough race - maybe we should have listened to him more. He's had a break now and we are back happy with him," O'Brien said.
War Command, such an impressive winner of the Coventry Stakes at Royal Ascot, will be seen next in the Phoenix Stakes on August 11. "Hopefully he'll go back to the Curragh on Sunday week," said the trainer.