WA's Nathan Coulter-Nile will come into calculation to play his first Test after allrounder James Faulkner was ruled out of the possible Ashes decider with injury today.
Faulkner was struck a blow while batting in the WACA Ground nets and was later diagnosed with a broken right thumb, ruling him out of the third Test against England, starting tomorrow.
The Tasmanian had been considered a chance to play in the match as Australia tossed up whether to leave out spinner Nathan Lyon in favour of an all-pace attack on what is expected to be a lively pitch.
Australia also has an injury concern with paceman Ryan Harris, who has been troubled by a sore knee since the victory in Adelaide that gave the hosts a 2-0 lead in the series.
If Harris is also ruled out, either Doug Bollinger or Coulter-Nile will replace him for the WACA Test. Both were put on standby for the Perth match last week.
Coulter-Nile knows the wicket well and took nine wickets in a recent Sheffield Shield match for WA.
Faulkner will remain with the Test squad for the time being in the hope he will be available later in the Ashes series.
The 23-year-old claimed six wickets and made scores of 23 and 22 in his sole Test appearance for Australia - against England at The Oval in August.