50 Cent has once again taken aim at longtime rival Floyd Mayweather Jr., reacting to reports that the boxing legend is preparing to come out of retirement following an exhibition bout later this year with Mike Tyson. According to 2Cool2Blog on Instagram, 50 allegedly responded after news surfaced that Mayweather had signed an exclusive deal with CSI Sports/Fight Sports. The G-Unit mogul reportedly mocked the move in a now-deleted post. “Broke gotta box till ya drop champ, ain’t nobody gonna watch that s**t LOL,” he allegedly wrote. The latest jab adds to a long history of online trolling between the two public figures. Recently, 50 also mocked Mayweather over his lawsuit against Showtime, which allegedly involves claims that his former manager orchestrated a scheme that cost him hundred...