If South Korea beat Japan in the Asian Games’ gold medal match on 1 September, he will be exempt.
Under Korean law, all men must do 21 months of National Service before their 28th birthday.
However, the South Korean government gives exemptions for sports stars who perform exceptionally at major tournaments.
Son was given permission by Spurs to miss the start of the Premier League season to play as one of his nation’s three over-age players despite the fact that it is not a Fifa-mandated competition.
Son, who turned 26 in July, will avoid the call-up if the team win on Saturday, but there are other opportunities. The 2019 Asian Cup, to be staged in the United Arab Emirates in January, is one and the 2020 Olympics in Tokyo is another.
This, though, occurs after he turns 28, but he could seek a waiver to allow him to play in a last-ditch attempt to avoid being called up.
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