Trent Busuttin and Natalie Young could be forced to pit Cauthen up against the world's top-rated sprinter at Moonee Valley on Saturday.
Their hand may be forced with their Darci Brahma 4-year-old well down in the order of entry for the A$120,000 Drummond Stakes (1200m), which would result in a clash with Lankan Rupee in the A$200,000 McEwen Stakes (1000m).
"He's a big, strong impressive horse. He's beaten Long John and Shamus Award and then things went wrong," Busuttin said yesterday.
"Ollie [Damien Oliver] said he seemed to work nicely this morning through the heavy going and he had a good blow afterwards.
"He'll certainly take improvement from whatever he does on Saturday. Ollie trialled him up last Friday and was pleased with how he went so we expect a good run on Saturday."