Former Australian Test captain Steve Waugh has warned that Ricky Ponting cannot go on forever despite his stellar form and selectors must start planning for his eventual departure.

Steve Waugh

Waugh, who played until he was 38, said some hard decisions needed to be made before next year's Ashes series against England. "At some stage players have to move on. I mean, he's 37, 38 -- that sort of age.

You've got to look towards where the future is, so it's always a tricky decision," The Australian newspaper quoted Waugh as saying.