The young Yorkshireman is expected to be named at number six for England in Thursday's first Test at Brisbane's Gabba after Carberry's fine start to their Australian tour.
Carberry cemented his claims for a second Test cap by reaching half-centuries in all three warm-up matches, including an unbeaten 153 against Australia A in Hobart.
Carberry's latest knock of 50 off 71 balls Saturday helped steer the tourists to a seven-wicket win over a Cricket Australia Invitational XI in Sydney.
"I'm not that egotistical," the 22-year-old said after Saturday's win. "I just want to represent England.
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Root was exposed by the Australian bowling attack when opening the batting in the last Ashes series.
Although he scored 180 in the second innings at Lord's he made only one more half-century in his other nine knocks in the July-August series when opening with skipper Alastair Cook.
"There are parts of my game I've worked hard on from last (English) summer... Hopefully I can become a better player for it.