Australia’s tour of South Africa is "in serious trouble", with the Courier Mail reporting a decision is just days away as to whether it will go ahead.
Reporter Ben Horne says Cricket Australia has concerns over the biosecurity measures Cricket South Africa can guarantee.
South Africa is currently fighting a mutant strain of COVID-19 understood to be more contagious than other, older variants.
The country last reported 4,525 new cases on Sunday.
Selectors named a 19-man squad for the three-Test series, with Matthew Wade axed for South Australian wicketkeeper Alex Carey.
The Australian Test side hasn't toured South Africa since the ball-tampering saga in 2018.