The new owners of Black Caviar's half brother All Too Hard will offer a 10 per cent share in the valuable colt.

The Caulfield Guineas winner, the most valuable asset in Nathan Tinkler's dwindling Patinack Farm thoroughbred empire, was sold to Vinery Stud in a $25 million deal finalised on Saturday.

The package also includes a Hunter Valley property at Aberdeen and stallion Onemorenomore, a Group One winner as a two-year-old.

Neil Werrett, a partner in Vinery along with retail mogul Gerry Harvey, said five shares were available in All Too Hard as a racing and breeding proposition.

"We've had a lot of people wanting to get involved in him so we are going to sell 10 per cent of him to both race as well as have an interest in him while he stands at stud," Werrett told racingvictoria.net.au.

"We've already had interest from one other major stud as well as individual breeders. At the moment we've got five shares left."

Werrett, also a major shareholder in champion Black Caviar, was the underbidder on All Too Hard who was sold at the 2011 Easter sale for $1.025 million.

The colt will continue to be trained by Michael, John and Wayne Hawkes who produced him in the spring to win the Caulfield Guineas and run second in the Cox Plate.

Werrett said he would meet with the Hawkes team this week to map out an autumn campaign which could include taking him overseas.

"We need to speak with John Hawkes about that before we finalise any plans for All Too Hard's autumn campaign," he said.

"We do want to shuttle All Too Hard when he does go to stud so we will be looking for an overseas stud for him to stand in the future."

All Too Hard is by Patinack's foundation sire Casino Prince out of Helsinge.

Black Caviar, meanwhile, is in pre-training ahead of a planned return to the track in February's Lightning Stakes which has been renamed in her honour.

The mare hasn't raced since her dramatic win in the Diamond Jubilee Stakes at Royal Ascot when she came the closest she ever has to being beaten.

She came out of the race the worse for wear and spent some months recovering from muscle soreness.