Wanderers made Lee Chung-Yong their fifth signing of the 2009 summer transfer window.
Moving to the Reebok from FC Seoul, the South Korean international signed a three-year deal for an undisclosed fee after being granted a work permit and receiving international clearance on 14 August 2009.
He made his Bolton debut a day later, coming on as a substitute in the first match of the season against Sunderland.
Since then, he has become a firm fans' favourite, thanks to some dazzling performances in the Wanderers midfield.
A skilful winger who is a regular on the international stage for South Korea, Chung-Yong is expected to become a key part of Owen Coyle's plans.
CHUNG-YONG IS SPONSORED BY KIA BOLTON