With Phil Hughes recalled to the side following Ricky Ponting's retirement, it was expected the left-hander would bat at number three, forcing Shane Watson down a spot., but speaking at the Big Bash League launch for Sydney teams the Sixers and Thunder, Clarke admitted the make-up of the batting line-up was still very much uncertain.
"It's something I've been thinking about over the last couple of days and will speak to (coach) Mickey Arthur about it when I get into camp," Clarke told reporters. "I'm not sure at this stage. We have some really good options."
The fact that Hughes and Watson like to open, along with current openers Ed Cowan and David Warner, means the Aussies are not short of options at the top of the order.
And Clarke said he is also open to moving from number five despite his stellar form in that spot over the past 18 months.
The New South Welshman has been weighing up the options over the last couple of days and is no closer to making a decision ahead of the match in Hobart next Friday.
He added: "Hughesy can bat at three, Shane Watson's batted three for us and both those guys have opened the batting for Australia as well. I'm not sure as to where I'll bat. The number I bat doesn't bother me, it's about fitting in where's best for the team and where I can help the team have success.
"That's been my goal since taking over the captaincy and that won't change."
Clarke, who will miss the Thunder's BBL clash with the Sixers on Saturday night due to back soreness, said the issue is improving every day.
"I'm in the process of rehab this week and seeing my physio and getting treatment," he said. "I'm confident if I keep doing all the right things I'll be right for the first Test."