O'Donoghue has been snapped up by the connections of Jakkalberry to ride the six-year-old in both the Caulfield and Melbourne Cups.
Marco Botti's charge won the American St Leger at Arlington on his last start under O'Donoghue and his Australian owners were keen to keep the partnership with Jakkalberry, who has arrived Down Under, intact.
Darren Dance, representing Australian Thoroughbred Bloodstock, said: "He's had to cancel some rides in Japan to come here because there are a lot of clashes around the Caulfield Cup.
"It's Champions Day and there's a big day in Japan.
"But I said to him that if he couldn't ride at Caulfield he couldn't ride in the Melbourne Cup and he said he'd definitely be right to ride in both because he wanted to ride in the Melbourne Cup.
"He rode him in the American St Leger and we were pretty happy with the way he rode him.
"Jakkalberry travelled like he'd gone five kilometres, not 40 hours halfway round the world.
"He got off the plane and he was bouncing, he drank 35 litres of water en route, which was way above any of the others, and he looked really bright yesterday afternoon and he looked bright again this morning when I went down and had a look at him."