Jason Coyle will continue to train a small team of horses for Nathan Tinkler despite his shock resignation from the Patinack Farm operation in Sydney.

The announcement on Monday that Coyle had left Patinack's Warwick Farm premises was followed by a statement from Tinkler who said the two would embark on a more traditional owner-trainer relationship with a smaller team of horses.

"Jason's contribution to Patinack has been significant and we thank him for his effort and dedication," Tinkler said.

"He is a talented, young trainer with a lot to offer the racing industry. I wish him every success in the future and look forward to further success together."

Just last month Tinkler restructured and employed Bart Cummings' long-time foreman John Thompson to train alongside Coyle.

At the time Patinack Farm said the move was not a demotion for Coyle but a way they believed their massive team of horses could progress more quickly.

The 35-year-old Thompson, son of former Crown Lodge trainer Vic Thompson, will now be in charge of around 80-100 horses.

They include Honest Truth and Small Minds who were to race at Warwick Farm on Tuesday under Coyle's name but will now go around for Thompson.

Coyle said he wanted to continue his career as a public trainer.

"I have tendered my resignation as private trainer to Patinack Farm, to pursue my career as a public trainer in Sydney," Coyle said.

"Nathan has been a great supporter and I look forward to continuing my relationship with Patinack Farm. I am disappointed that I will not be training horses like Trusting and Onemorenomore, but I wish Nathan and Patinack Farm the best of luck with all the horses.

I hope that there will be some owners out there, who see me as a trainer of Group One winners, and who will support me with some horses to train."

A former electrician who made his fortune in the mining industry, Tinkler has invested $150 million to establish his Patinack Farm racing and breeding empire.

He first burst onto the racing radar at the 2008 Karaka yearling sales in New Zealand where he was the top buyer spending almost $7 million on 24 yearlings.

He again emerged as a major player at the Magic Millions Gold Coast sale a couple of months later outlaying a record $19 million and has continued to invest heavily since.

Along with his buying sprees at the yearling sales he established Patinack Farm in the NSW Segenhoe Valley as a stallion complex before adding to his property portfolio by purchasing Swettenham Stud where he runs his 250-strong band of broodmares.

Tinkler anointed Anthony Cummings as his main trainer when he was getting his Patinack Farm operation off the ground.

However, the pair split in December last year when Cummings declined to move from Randwick to Warwick Farm where Tinkler wanted his horses trained.

Coyle, who had been preparing a handful of horses for Tinkler from a modest base at Newcastle, was handed the reins and appointed as Patinack Farm's head trainer.

He went from overseeing a small provincial team to taking over around 100 boxes at Warwick Farm and did a tremendous job in a short time winning Group One races with Onemorenomore, who claimed the Champagne Stakes during the Sydney autumn carnival, and Linky Dink who won the TJ Smith in Brisbane.