Simenon remains bound for the Ascot Gold Cup despite connections admitting that he needs to raise his game.
At Royal Ascot last year, Simenon finished just a quarter of a length behind Estimate in the great staying event and went on to post excellent efforts in the Lonsdale, Caulfield and Melbourne Cups as well as the Hong Kong Vase.
Given a break by trainer Willie Mullins, he showed some promise in a pipe-opener in Dubai but was last in the Dubai Gold Cup and beat only one home in the Sagaro Stakes at Ascot.
"Things haven't gone right this year but there's only one Gold Cup and as far as I know the plan is still to run," said Peacock.
"We'd like it to stop raining there but whereas last year we had that very good run at Chester and we knew he was in great shape so we were confident of a good run, there's not the same confidence at the moment."