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Former Australian fast-bowler Jason Gillespie says "careers will be on the line" in the final Ashes Test match between England and Australia.

Australian captain Michael Clarke, along with opening batsman Chris Rogers, will retire after the match and he says the climax of the series will be a "test of our character."

Gillespie, who took over 250 Test match wickets, explained to the ÃÛÑ¿´«Ã½'s Steve Crossman where this leaves Australia.

Picture: Michael Clarke (credit: Getty)