Swann knee needs rest
England spinner Graeme Swann is set to be sidelined for up to two weeks due to a badly bruised knee.
Swann has been advised to rest after suffering continued discomfort from a knock to his left knee while batting in the first Twenty20 international at Adelaide last week.
The 31-year-old will certainly miss Friday's second one-day international in Hobart and may not return until the penultimate match of the seven-game series in Sydney on February 2.
"He has got a slightly strangely deformed kneecap on his left knee," England team director Andy Flower said.
"He got hit and it is badly bruised and it is quite painful so he won't be playing in this game and might have to rest for 10 days to two weeks.
"That does give (back-up spinner James) Tredwell the opportunity depending on whether we want to pick two spinners or not."
The news comes as a blow to England's hopes in the Commonwealth Banks Series, which Australia lead 1-0, with their two frontline seamers Stuart Broad and James Anderson already absent.
Broad is recovering from a stomach injury he suffered in the second Ashes Test, although he will join Anderson, who has spent the post-Ashes period resting in England, on a flight back to Australia on Friday.
Anderson was given time off after playing in all five Tests against Australia and is scheduled to return for the fourth one-dayer in Adelaide on January 26.
Broad is unlikely to take any part in the series but Flower revealed he preferred the right-armer to complete his rehabilitation with the squad in Australia.
"Stuart will be arriving out here on the 21st along with James Anderson," he said.
"We don't anticipate Broad playing in this series. It would be a surprise if he got up to speed in time to do that.
"It is better for him to be out here rather than being in the middle of an English winter."