Australian legend Shane Warne believes young England allrounder Scott Borthwick is "very underrated" and could have a big future with both bat and ball at international level.

Borthwick has played a single Test for England – plucked from Sydney grade cricket for the New Year's Ashes Test at the SCG in early 2014 - but after initially attracting attention for his leg-spin skills, he has since transformed himself into a batting allrounder and it's his form with the willow this county season has resulted in speculation a return to the Test XI isn’t far away.

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He has five first-class centuries for Durham under his belt already this northern summer, but Warne doesn’t want the 26-year-old to neglect his other discipline, believing he could become a genuine all-round option for England and one-day replace Yorkshire’s Adil Rashid as the country’s premier leggie.

"I think the young English batting allrounder, Scott Borthwick, is very underrated,” Warne told Sky Sports.

"It is very hard playing up in Durham as a leg-spinner, (it is) freezing cold all the time and it seams around all over the place.

"It may be best for his development if he were to move counties.

"His batting has really come on, but I hope he hasn't shelved his leg-spin, as I think he could play for England as a genuine all-rounder.

"Adil Rashid still has a lot to offer as well but I think Borthwick is the guy of the future. He could be outstanding for England, if he can just stick at his bowling."

Warne shared his thoughts on a long list of leg-spinners past, present and future, tipping rising Australia tweaker Adam Zampa to have a big future ahead of him, while he urged India to give Piyush Chawla greater opportunities at international level after his strong season for Kolkata Knight Riders.

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The 27-year-old has represented India in three Tests, 25 ODIs and seven T20s, but has been on the outer with India selectors since playing England in a T20 in December 2012.

"Piyush Chawla stands out for me in the IPL. I wish India would pick him because I really enjoy watching him bowl,” Warne said.

"I don't think a lot of batsmen pick him out of the hand and although he might bowl a little bit of buffet stuff at times, mostly he seems to do well. I'd certainly like him in my T20 side.

"It is great to see the importance placed on leg-spin in the game currently.

"I was at the World T20 and there were about eight or nine in the tournament who had an impact. It is great to see captains have faith in those leg-spinners - they are not only being picked but getting thrown the ball in tough situations."