However, in 2008, the coach changed from Kim Hak-Beom to Shin Tae-Yong due to the poor performance and he got traded Incheon United After that, in order to finish his military duty, he tried to enter Sangju Sangmu Phoenix.
But failed with date calculation, he got started the Social Service Personnel, the supplement system of the military duty.
His performance was prodigious in terms of both quantity and quality with his veteran experience in spite of his two years career break.
On 9 November 2014, Son signed a one-year deal with Chinese Super League side Hangzhou Greentown.
This biographical article related to a South Korean association football midfielder is a stub.