The South Korean is now expected to complete two years of military service, but the 26-year-old has been provided with the opportunity to earn an exemption.
Son, who would have to report for duty within the next two years if South Korea do not win the final, took leave from the Premier League to join the squad in Indonesia.
"Son will earn an automatic get-out if South Korea win Saturday's final but will not give up seeking an exemption if they are defeated by Japan".
Son's South Korea side beat Vietnam 3-1 on Wednesday to secure their place in the final of the competition.
'I don't think I need to say anything, ' said Son, refusing to be drawn on the subject.
"My wish is for PSC to focus on developing our national team and national pool because I know we can do better than what we have achieve this time".
Yuki Koike of Japan won the men's 200 in 20.23 in a photo finish, beating Yang Chun-han of Taiwan.
Cardiff City vs. Arsenal - Football Match Report
Today was no different, his distribution was poor and his goalkeeping for the first goal could have been much better. The Arsenal boss is set to give his summer signing Lucas Torreira his first start in the red shirt of the Londoners.
South Korean archers won three golds on Tuesday, . taking Team Korea's gold medal haul to 32. Bunga Nyimas, who is 12, placed fourth for Indonesia.
The 16-year-old Yosozumi, an X Games medalist, won the women's park final over Japan teammate Kaya Isa and Zhang Xin of China.
China's Wang Kaihua and Jin Xiangqian grabbed gold and bronze medals in the men's race while Japan's Toshikazu Yamanishi finished second.
The Korean U-23 national soccer team led by Kim Hak-beom and the Vietnamese U-23 national soccer team led by Park Hang-seo will play the semi-finals of the Asian Games men's football game in Jakarta, Palembang on Sept 1, 2018.
The game was a tossup until midway through the second quarter when the Iranians went on a 10-0 run to put up a 33-18 lead less than 5 minutes to go in the first half.
The defeat ended Vietnam's dream of reaching the final, and even winning the gold medal, but winning a bronze would be a stupendous achievement at the Asiad.
After the game, Park was philosophical.