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Australia's record wicket-taker, who is preparing for another season of the Big Bash League, told News Limited newspapers he could confidently bowl up to Test standard again.
While indicating he was happily retired form the longer form of the game Warne said if his close friend Clarke suggested his services were needed he'd give it some serious thought.
"If your best friend says, 'Mate, I want you to seriously consider making a commitment to Australian cricket and coming back out of retirement', (to) make myself available for selection, that's a different scenario," Warne said.
The 43 year-old, who has 195 Ashes wickets in 36 Tests at an 23.25, said he felt the urge to play the five-day game again while watching the third Test against South Africa in Perth, when the Australian attack took a beating in the Proteas' second innings.
"I felt like I wanted to jump off the couch and grab the ball," he said.
"I really felt for Michael Clarke from a captaincy point of view.
"When you've got international bowlers bowling one or two full-tosses an over and half-volleys, I felt for Pup, I really felt for him."
Warne said he was well pleased with his bowling for the Renegades in the lead up to the T20 BBL.
"I think I'm bowling as good as I have for a long time - the best I have since I retired from international cricket in 2007," he said.
"It's because I'm fresh. I don't bowl for 9-10 months of the year and bowl 5000 overs any more."