Former Japan and Celtic star Shunsuke Nakamura, currently at Yokohama FC in the J-League second division, is set to retire at the end of the season, sources familiar with the matter said Monday.The 44-year-old midfielder, known for his deadly set-piece deliveries with his left foot, played 98 games for Japan, scoring 24 goals, and was part of the 2006 and 2010 World Cup squads.The only player to be named J-League MVP twice, in 2000 as the youngest ever at age 22 and again in 2013, Nakamura has scored 73 goals over 408 games in J1. His 24 goals from free kicks are the most in the league's hi…READ FULL ARTICLE