Gloria Trevi has signed a management agreement with Great Talent Entertainment, directed by Armando Gómez, to represent her in all areas, Billboard has learned.Gómez, who has remained an integral part of Trevi’s team since 2005, has now taken over full management of the Mexican artist. Great Talent Entertainment was established in 2005.Additionally, Trevi, who’s signed to Universal Music Latino, has named Tamara Jiménez as assistant manager and Mónica Meza as marketing manager in the U.S.