South Korea's Olympic committee has lifted its ban on Park Tae-hwan, allowing the former gold medallist to compete at Rio.
Eden Hazard scored as Belgium beat Norway 3-2 on Sunday, while the Czech Republic lost to South Korea and Russia drew with Serbia.
Spain produced a dominant display to thrash South Korea 6-1 in a friendly in Salzburg on Wednesday.
Swansea midfielder Ki Sung-yueng has returned home to South Korea to complete a mandatory four weeks of military duty.
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Australia have been crowned Asian Cup champions after a dramatic 2-1 win over South Korea at Sydney's ANZ Stadium.