By Gabriel F. Cordero
A source has informed fightnews.com that WBA super bantamweight world champion Guillermo Rigondeaux could be in negotiations with Top Rank to extend his promotional contract by two years. Rigondeaux’s contract with Top Rank officially expired on Monday July 16. Although it is known that Rigondeaux also has had talks with Mayweather Boxing and Golden Boy Promotions, his first choice is Top Rank. The source also confirmed that Rigondeaux could appear on the September 15 card between Julio Cesar Chavez Jr. and Sergio “Maravilla” Martinez.