Goldman Sachs could benefit from buying E*Trade: CLSA

(Reuters) - Goldman Sachs Group Inc could benefit if it expanded its traditional banking by acquiring online brokerage E*Trade Financial Corp given the Wall Street bank's revenue has been largely flat this decade, said CLSA analyst Mike Mayo. Goldman would gain from increased deposits, freeing up of excess capital that is otherwise trapped and vitality to revenue growth, the veteran banking analyst wrote in a client note. The bank, which carries out consumer, corporate and private banking throug