Spin legend Shane Warne has ruled out coming out of retirement to play for Australia despite Prime Minister Kevin Rudd's personal plea to the cricketer to don the national colours again.

Warne wrote in his blog for the Herald Sun he was "very flattered" by Rudd's request while sharing the commentary box with him during the second day of the Boxing Day Test between Australia and Pakistan, but returning to top class cricket is "highly doubtful".

"I am very flattered but it is highly doubtful. I am sticking in the commentary box," Warne wrote in his brief response.

The 40-year-old Victorian also ruled the option of playing domestic Twenty20 cricket in England.

"I've had offers from a few different counties to play in the Twenty20 competitions, but I have also been offered to commentate for Sky, so I will probably elect the commentary box, unless, it's an offer I can't refuse," Warne said.