PARIS (Reuters) - Renault has sidelined a senior executive close to Carlos Ghosn, as the French carmaker and its Japanese affiliate Nissan continue to overhaul management in the wake of the financial scandal engulfing their former chairman. General Secretary Mouna Sepehri will move to an advisory position and leave the executive committee, Renault said on Wednesday, as it announced broader top management changes. Ghosn is facing trial in Japan for failing to disclose some $82 million in income he had arranged to be paid later, as well as transferring personal investment losses to Nissan when he was chief executive. He denies any wrongdoing. Ghosn's November arrest and dismissal as Nissan chairman, following an internal investigation, inflamed tensions with 43.4 percent-owner Renault that have begun to ease since his forced resignation from the French carmaker in January.