Australia's stand-in captain wants England's methods for gaining reverse-swing monitored, hinting one of the home side's bowling trump cards for the Ashes may be pushing the rules boundaries.
James Anderson and co's ability to get the ball to reverse early was crucial in England's 48-run Champions Trophy win over Australia at Edgbaston on Saturday.
Bailey said it was telling that the South African and Pakistan bowlers struggled for the same effect at the same ground in similar conditions just two days later.
Asked whether he had any concerns about the manner in which England worked on the ball, Bailey was reluctant to go into detail but said it was an issue.
"It's something to look at," Bailey told AAP. "What I looked at particularly was whether the teams got it [on Monday] at the same venue and they didn't seem to get much reverse-swing.
"So it's something to watch."
When asked at Saturday's post-match press conference if he was surprised how quickly England had managed to reverse the ball, a slightly animated Bailey replied: "Yeah, very".
Australia's national selector John Inverarity said he didn't share Bailey's concerns.
"I didn't notice them doing anything. They were very skilled at it [reverse bowling] and executed that very well," he said.
Anderson and Stuart Broad were accused of ball tampering in South Africa in 2010, but no charges were laid.