Aidan O'Brien may find Arc irresistible after Nathaniel becomes latest absentee On Tuesday Nathaniel joined Danedream and Snow Fairy on a growing list of absentees. He was ruled out of the Longchamp feature after returning unsatisfactory blood tests when he was found to be running a temperature. James Wigan, racing manager to owner Lady Rothschild, said: "Considering how close we are to the race, we cannot consider running him." Aidan O'Brien has delayed his ­decision on whether Camelot lines up until later this week and has already stated that his son, Joseph, will partner St Nicholas Abbey in the race. If Camelot is given the go-ahead a new jockey will have to be found for the colt. Seventeen remain in the race after Nathaniel's defection, but Saonois, the French Derby winner, is widely expected to be supplemented on Thursday. Japanese challenger Orfevre, winner of the Prix Foy, has strengthened as favourite, at around 5-2.