Americain's handler Stephanie Nigge has joined the Hayes team to maintain a supervisory role with the 2010 Melbourne Cup winner.
Until now the International Horse Centre at Werribee racecourse is the only home Americain has known on his two trips to Australia.
Hayes was appointed a week ago as his new trainer, taking over from France's Alain de Royer-Dupre.
Hayes has flagged the Australian Cup (2000m) at Flemington in March as a preferred autumn target. The alternative is Sydney's Ranvet Stakes (2000m), while the BMW (2400m) is his other group one weight-for-age mission.
Americain has raced five times in Australia for wins in the 2010 Geelong and Melbourne Cups, this year's Moonee Valley Cup and an easy last-start victory in the Sandown Classic (2400m) on November 12.
His only Australian defeat was a luckless fourth to compatriot Dunaden in this year's Melbourne Cup.
- AAP