A full-back, Yoo represented South Korea as a player during the 1974 World Cup qualifiers.
However, the position went to Huh Jung-moo during the 1994 finals, though apparently he remained part of the coaching setup in some capacity.
[5] On 21 December 2007, it was announced that Yoo had been hired as the Cambodia national team coach.
This appointment was reported to be part of a sponsorship deal with a Korean technology company worth $205 thousand a year, half of which will be Yoo's salary.
This biographical article related to a South Korean association football defender is a stub.