Jenner is often at Warne's side in the nets

And Jenner, who has recently helped England's Academy in Austrlaia by coaching Schofield, is certain he was too raw to be playing Test match cricket so young.

"He was brought in partly because England knew the impact that Shane had had," he says.

"Chris hadn't exactly set the world on fire - he had had a pretty good A tour but he was playing against other teams' second XIs.

"But in the Test arena he showed his inexperience.

"I've been trying to encourage him to work on the standard stock leg-break - which is difficult enough without getting onto the 100 varieties he sometimes tries.

"If he gets hit for four it's not the end of it all - it means he's in the game."

But there is one area that needs to be addressed by captains.

Jenner says that all too often in English cricket leg-spinners are taken out of the attack after they have been hit for a boundary or two.

"I really hope Chris will be a really good leg-spinner because he's one that the kids in England aspire to," he adds.

Schofield's debut came too early, says Jenner

"What will then happen is that a few youngsters will be pressing for a place themselves.

"And without competition nobody will improve."

Jenner has been spreading the leg-spinning gospel all round the world.

Youngsters in the West Indies, South Africa and New Zealand have already been the beneficiaries of his expert guidance.

And - irony of ironies - India, the home of spin bowlers, is "looking at the possibility" of hiring Jenner's services.

For the moment, the England and Wales Cricket Board have enlisted Jenner's help to find 20 elite wrist-spinners - 10 under 15, 10 over 15 in various parts of Britain.

The two really outstanding performers get to travel to Australia for two weeks of intensive coaching.

It sounds a bit like cricket's version of Pop Idol - and in the same way that Will Young is set to be the next Robbie Williams, England hope to find the next Shane Warne.