Michael Vaughan believes Stuart Broad and James Anderson should not play together for England any more.
Though they are England's leading wicket-takers in Test cricket - Anderson with 575 scalps and Broad 467 - Vaughan believes at 38 and 33 respectively they need to be deployed wisely.
Anderson missed virtually the entire Ashes series after suffering a calf injury in the first Test and would be past 40 by the time England next visit Australia.
Speaking on BBC Radio 5 Live's Tuffers & Vaughan show, Vaughan said: "I don't think it is right both of them play now.
"It might be that Broad plays one series and Anderson plays one series.
"They are not going to like it but they are at that stage of their careers where England are going to have to manage the combination very smartly."
Jofra Archer made a huge impact after replacing Anderson in the side while 21-year-old Sam Curran impressed in England's victory in the final Test at the Oval.
Australian Associated Press