Alastair Cook's team -- coming off a dispiriting eight-wicket loss in the fourth Test in Melbourne -- face becoming only the third English side to lose an Ashes series 5-0 to their oldest rivals.
It has been a tour from hell for England with the loss of senior players Jonathan Trott (stress) and Graeme Swann (retirement), star players out of form and Kevin Pietersen admitting his team-mates are "mentally fragile" from playing in back-to-back Ashes series.
Former England captain Michael Vaughan believes the tourists will be unable to stop the Mitchell Johnson-led Aussie juggernaut in Sydney with the same team that succumbed in Melbourne in four days.
"It is not easy for them. England will not do this with the same XI. There is too much baggage, there are too many scars," he wrote in an English newspaper.
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As England's tour has unravelled so has the pressure cranked up on Cook as skipper.
"It would hurt and I've got no plans of going anywhere. I'm desperately trying to use as much of my experience of playing 100 Tests to help turn this team around.