Aussie coach expects extra subs

Buchanan's side face England at Headingley on Thursday

Australia coach John Buchanan believes future one-day internationals could use a bench of as many as four substitutes.

Single replacements are to be trialled in the forthcoming NatWest Challenge between Buchanan's side and England.

"Obviously the powers that be will look at this introduction and then maybe begin to think a little bit further about it," Buchanan said.

"At the moment all touring teams travel with parties of 15, so the concept could be that we actually play all 15."

The three-match NatWest Challenge begins at Headingley on Thursday, moving to Lord's two days later and The Oval next week.

All-rounders appear the best option to fill the new role, although England have selected hard-hitting batsman Matt Prior as their extra man.

Australia are yet to decide on their 12th man but feel well covered for any eventuality on this tour.

"You always understand what the core unit of your side is but there are always selections you might not be sure about depending on conditions," Buchanan added.

"You might not be sure about the best make-up of your team but obviously in a squad situation you hope to cover all bases."