Sports Giannis Antetokounmpo’s brother to sign two-year deal with Bucks July 8, 2019Matt Velazquez, Milwaukee Journal SentinelComments Off on Giannis Antetokounmpo’s brother to sign two-year deal with Bucks Thanasis Antetokounmpo, the 26-year-old brother of Milwaukee's superstar and league MVP Giannis Antetokounmpo, will join the Bucks on a two-year deal.