England captain Michael Vaughan could win a late call-up to the Rest of the World squad to take on Australia.
Michael Vaughan skippered England to glory against Australia
India star Sachin Tendulkar has a deadline of 21 September to declare his fitness to selector Sunil Gavaskar.
Tendulkar, 32, underwent surgery on his elbow in May, which ruled him out of tours to Sri Lanka and Zimbabwe.
And another batsman, Herschelle Gibbs, is also an injury doubt. Vaughan could be a Test replacement while Pakistan's Inzamam-ul-Haq may gain a one-day spot.
An International Cricket Council spokesman told BBC Sport: "It's right that there are concerns about Tendulkar's fitness.
"The selectors have discussed potential replacements for him, for both the Test and one-day squads.
"I can't confirm who those players are at the moment because we haven't checked whether the players are available."
Gibbs told News24 in South Africa he would withdraw from the side because of a knee injury.
He added: "I have gone for an MRI scan where it showed that I had
damaged the cartilage behind my right knee cap."
The Super Series consists of three one-dayers in Melbourne on 5, 7 and 9 October and a six-day Test starting 14 October in Sydney.
Vaughan has just captained England to Ashes glory against Australia and hit one century during the series.
But he was not in the best of form with the bat, averaging 32.60.
South Africa's Graeme Smith will captain both the Test and one-day sides.
The Rest of the World XI will be coached by New Zealander John Wright.
England coach Duncan Fletcher said he was "disappointed" not to have been asked to do the job.
But there is some representation from home shores - Andrew Flintoff and Steve Harmison are in the Test squad, while Flintoff and Oval hero Kevin Pietersen feature in the one-day squad.