The former Australia spinner believes the move would release the shackles on the Yorkshireman and aid his bid to become the world’s premier Test batsman.

Such a scenario would represent a huge turnaround in fortunes for Buttler, who returned to the Test side earlier this year after an 18-month exile when England’s new chief selector Ed Smith showed faith.

”Jos could play with his freedom and captain the side, and Joe could just concentrate on his cricket. If he totally 100 per cent concentrates on his cricket, his batting and nothing else, then maybe we might see Joe Root become the best batsman in the world. He’s got the talent to do it.”