Lionel Messi's new nemesis? Bucks star and Nashville SC minority owner Giannis Antetokounmpo performs Cristiano Ronaldo's 'SIU' celebration - mimicking Inter Miami star's biggest rival ahead of Leagues Cup final

Milwaukee Bucks superstar and Nashville SC minority owner Giannis Antetokounmpo had some fun at Lionel Messi's expense ahead of Saturday's Leagues final match.