Nissan Motor Co. has rejected partner Renault SA's request to send a successor with equal authority to replace ousted Chairman Carlos Ghosn, sources close to the matter said Tuesday, in a heightening leadership tussle at one of the world's biggest automaker groups.Renault, Nissan's top shareholder which has retained Ghosn as CEO and chairman following his arrest last month for alleged financial misconduct, made the request during the Japanese automaker's emergency board meeting on Nov. 22, according to the sources.The proposal was made to protect its business interests and maintain its infl…READ FULL ARTICLE