Manny Pacquiao will fight Korean celebrity martial artist DK Yoo. After his failed (and expensive) campaign to become the President of the Philippines, boxing legend Manny Pacquiao is now also heading to the exhibition circuit. Much like his former rival in Floyd Mayweather did, Pacquiao will return to the ring against a YouTuber. The eight division world champion is competing in South Korea against DK Yoo, a 43-year-old celebrity martial artist. Yoo has his own “Warfare Combat System” and claims to have an extensive background in martial arts, but doesn’t have any pro fights to his name. Perhaps I’m wrong,…