Mariah Carey has hired a new manager after parting ways with longtime collaborator Jermaine Dupri. The Hero hitmaker hired her superproducer pal as her manager last autumn (13), but after less than a year in his new role, Dupri is stepping down from the position. A statement released by Dupri reads: "I'm a very hands-on person when it comes to my work. I put my all into every project. But when I'm not allowed to do what I do, then I know it's time for me to move on. Mariah and I enjoy working together and will continue to make great music together in the future." Carey hired Dupri in the middle of production of her 14th studio album, Me. I Am Mariah... The Elusive Chanteuse, which she had been working on for the past two years. The record was finally released in May (14), but had a disappointing debut in the U.S. selling just 58,000 copies in the first week. Carey had previously been managed by music veteran and former American Idol judge Randy Jackson. She has now reportedly hired Def Jam Recordings president Kevin Liles, who also manages Jay Z and Ludacris, to oversee her career, according to Billboard Magazine.