England have admitted captain Andrew Flintoff is experiencing discomfort in his left ankle but insist it is not a major injury concern at present.
Flintoff was only able to bowl four overs on Monday
Flintoff bowled just four overs on Monday as Australia were dismissed for 513 in the second Test in Adelaide.
The 28-year-old has only just returned to action after having ankle surgery.
"There are no worries at the moment, we are just going to have to wait to see how it fares over the next couple of days," said coach Duncan Fletcher.
"But from the advice I've been given we are not even going to send him for a scan at this stage.
"He felt a slight discomfort there and he wanted to make sure everything was all right and he came off (didn't bowl), and felt more comfortable with the other bowlers bowling.
"Andrew has played back-to-back Tests, he's done quite a bit of bowling and it's just having played a lot of cricket.
"He's had this problem in the past, but the medical staff are pretty confident at the moment."
The second Test is heading for a draw after England closed the fourth day on 59-1, a lead of 97 over Australia.
England will have a two-day warm-up match before the third Test starts in Perth on 14 December.