[1] Choi played as a striker for Anyang LG Cheetahs (currently FC Seoul) in South Korea's K League.

Choi was appointed as the assistant coach of FC Seoul in August 2006, and was promoted as the caretaker manager in April 2011.

They drew all two matches of the Champions League final against Guangzhou Evergrande, a Chinese club led by Marcello Lippi, but couldn't get the title due to the away goals rule.

On 9 December 2018, Choi won the relegation playoffs against Busan IPark, successfully keeping Seoul in the K League.

His former wife, a one-time contestant in a Miss Korea pageant, went through the legal procedures to take half the estate properties under Choi's name per their prenuptial agreement.