England's white-ball captain Jos Buttler has been ruled out of the T20I series against Australia due to a recurrence of a right calf injury, which may also affect his participation in the subsequent ODI series. In his absence, Phil Salt has been appointed as the stand-in captain for the three-match T20I series starting September 11. Buttler's injury, sustained in July while preparing for The Hundred, has sidelined him since the T20 World Cup semi-final in late June. All-rounder Jamie Overton has been named as a replacement in the T20I squad, while Jordan Cox has been added to the ODI team as cover. Emerging star Harry Brook is anticipated to lead the ODI team if Buttler remains unfit. The T20I series serves as a test for a new-look England squad ahead of their summer fixtures against Australia.