In 1980, the Chicago Sting selected Koutsoukos in the North American Soccer League draft.
On June 13, 1982, the Sting traded Koutsoukos to the Tulsa Roughnecks in exchange for Tim Twellman and John Tyma.
[2] In the fall of 1982, he returned to the Sting which was playing in the Major Indoor Soccer League.
On January 31, 1986, the Comets traded Koutsoukos to the Minnesota Strikers in exchange for John Bain.
In 1998, Koutsoukos was hired to coach the Montreal Impact of the National Professional Soccer League.