Floyd Mayweather Jr. is sued in federal court in New York by promoter CSI Entertainment, according to reports based on a complaint filed Thursday. The lawsuit alleges that Mayweather accepted advance payments totaling $4.65 million in connection with exhibition fight agreements involving Mike Tyson and Manny Pacquiao, but then withdraws from the deals, leaving CSI Entertainment claiming financial losses. The complaint, described as 34 pages in one report, states that CSI Entertainment secured exclusive rights related to both events and entered into expectations that the matchups would generate substantial global interest. Another report characterizes the dispute as involving more than $4 million in purported advances and similarly says the promoter accuses Mayweather of backing out of both high-profile fight arrangements after receiving the money. The filings and coverage focus on contract terms, exclusivity, and the advance payments, with the underlying allegation centered on Mayweather’s alleged failure to proceed with the scheduled exhibition bouts.