Discussions have been held between the ECB and Cricket Australia over entry requirements and quarantine and bubble conditions England will face Down Under, with the players set to make a decision by the end of the week.
Serial Ashes winner Botham believes some England players could be hiding behind the Covid-19 issue.
“It’s the ultimate test and — I don’t know — I start to wonder maybe if some of these guys don’t fancy the ultimate test,” Botham, 65, told the Daily Telegraph.
“You have to start to worry about it. Playing for England is the ultimate. To play Test cricket for England is the ultimate and to play against Australia in Australia, and win, is magnificent.
“I just wish that we could actually put a positive spin on something and my positive spin is: ‘Let’s get out there, let’s see if we can beat the best in their own backyard.’ Because Australia don’t lose very often in their own backyard.
“I suggest it’s a challenge and if I was in their boots, I’d already have my bags packed.”
Australia currently hold the urn after a 2-2 draw in England in 2019, with the first Test due to start in Brisbane on December 8.