The six-year-old missed an intended outing in the Irish St Leger earlier this month because of the prospect of testing ground.
With conditions already described as soft in France and more rain forecast, the Gold Cup winner may be forced to miss another Group One outing.
"We're doing a weather watch," said Bell.
"A decision will be made later in the week whether he goes or not.
"We hope to run and then go to Ascot on Champions Day."
Big Orange last ran in the Goodwood Cup when he made a valiant attempt to concede 13lb to St Leger third Stradivarius.