South Korea coach Juergen Klinsmann expects a "battle" against Australia as he attempts to best Socceroos counterpart Graham Arnold and mastermind progression into the Asian Cup semi-finals.
Klinsmann's charges kept their tournament alive with a dramatic win on penalties over Roberto Mancini's Saudi Arabia in the round of 16, locking in a quarter-final against Australia.
The Socceroos will take on South Korea at the Al Janoub Stadium in Doha on Friday evening (Saturday 2.30am AEDT).