England bowling coach Troy Cooley insists he will not pass on their secrets to Australia when he switches sides and returns home next month.
Shine and predecessor Cooley
The Tasmanian has been credited with the improvement in England's seam attack, which helped regain the Ashes.
But he told BBC Sport that cannot be undone by revealing inside information ahead of the return series next winter.
"All the trade secrets are out. If you get your coaching manual you won't find too much that isn't there," he said.
"It's all about getting the players prepared properly - all I want to do is make sure the bowlers develop and become better."
Cooley also insists he has been totally committed to England during their current tour to India, even though he agreed a deal to work with the Australia team in December.
Steve Harmison and Simon Jones were known to be upset when news of his "defection" broke but the coach says relations with his players have not been soured.
"I've tried to keep very focused on the job and kept the new job in the background.
"I've been treated well by the players. We've built up a very good relationship over the last three and a bit years and that's something you don't take lightly.
"Some great things have been achieved which I am very proud of.
"When I first came over, they were a good group of bowlers with good skills. To see them develop their skills along the way has been very exciting for me. It's pleasing to see what they have done."
Having been a key factor in England's Ashes triumph, Cooley now wants to turn the tables later this year.
"I've been out of the Australian system for three years now so it will take me a bit of time to get my feet under the desk," he added.
"I'll go back into the academy and hopefully we can build a strong bowling attack so when England come across we can have another cracking series."
His successor Kevin Shine believes Cooley has laid a solid platform which he can build on.
The 37-year-old former Somerset coach is excited about the talent coming through and believes the Australian should take plenty of credit for that.
"My job will be to improve what is already in place. Troy has done a great job," Shine explained.
"We have got some good youngsters coming through. With the foundations so firmly in place, it's my job to make that work and get decent bowlers through.
"Troy has left things in a pretty healthy state. He has been a great mentor to me and I have learned massively from him."