Australia wicket-keeper Adam Gilchrist was released from hospital on Tuesday is expected to be fit for Thursday's first Ashes Test against England.
The 30-year-old had been on an intravenous antibiotic drip to treat an infected elbow injury.
Speaking on Monday, Gilchrist said: "It's frustrating not being able to train but I'm working on the basis this is a frustration and nothing more.
"I'm keen to get back on deck as soon as possible and my expectation at this stage is that I will be fully fit and ready to play in the Test match come Thursday morning."
Gilchrist is one of Australia's key players - as well as being wicket-keeper and vice-captain, he is also one of the world's best batsman.
England pace bowler Darren Gough still believes he can play a part in the Ashes series, despite his recurring knee trouble.
Captain Nasser Hussain hinted that Gough might not be fit for any of the five-Test series having been sent to the national Academy in Adelaide for rehabilitation.
But Gough said he remained positive that he could return.
"I'm doing round-the-clock training. If I was knackered I'd be off home," Gough said in Adelaide.
"I've come here to get out of the way. The 15 players available get priority with physios and trainers."
Gough has not played Test cricket for over a year, and has had surgery on his left-knee on three occasions.
He reported swelling and discomfort in his knee after bowling two separate spells in the nets in Brisbane on Sunday.