Former Warriors forward Matt Barnes announced Monday on Instagram that he is retiring from the NBA. "Had a cool 15yr run!!" wrote Barnes, who hasn't played professionally since winning an NBA title with Golden State in June. "Traveled the world met alota cool people, some will be brothers for the rest of my life! BUT NOW.... You telling me I can dress like this for business meetings & make more money off the court than I made ON?? & spend more time with my kids??!!Ha... MEEEEE the one that wasn't suppose to be s--- & ended up making it!! Let's Do it! Love me or HATE ME, I DID IT MY WAY!" Barnes was a key rotation player on the 2006-07 Golden State team that became the first No.