Park Ji-sung, Lee Young-pyo and Ahn Jung-hwan
These are the first generation players that had a fruitful and successful career in Europe. They have an inherent obligation and responsibility to bring their learnings back home. The last time I checked, Park Ji-sung was some panelist with Bae Sung-jae, giving a talk at the nearby courthouse. Actually, I think he was playing Jokgoo on Running Man. Lee Young-pyo contradicted himself (again) by announcing his commentary for the UCL final. Ahn Jung-hwan...
Park Ji-sung, Lee Young-pyo and Ahn Jung-hwan