For England skipper Cook, an Ashes series win would be the ideal reward for several difficult years which included a 5-0 whitewash reversal 'Down Under' in 2013/14, the fall-out from the international exile of Kevin Pietersen and a personal loss of form.
Meanwhile an Ashes series win in England is one of the few outstanding achievements left for Clarke to fulfil in the course of a brilliant career, with the star batsman's three previous Test series in Britain ending in defeat.
"We stood alongside each other in the slips and chatted all day about captaincy," Warne told the Sunday Times.
"He showed a great cricket brain for one with so little big-match experience under his belt."
Clarke, however, has not always had the support of his players as was shown by the fall-out from the 'homework-gate' affair in India, although there appears to be far greater harmony within the Australia camp since Darren Lehmann replaced Mickey Arthur as coach on the eve of the 2013 Ashes in England.