PARIS, March 3 (Reuters) - U.S investment company Artisan Partners on Wednesday said Danone needed to appoint a new, independent chairman, adding more pressure on Emmanuel Faber who is the French food company’s current chairman. This week, Danone said Faber - who until now has combined the CEO and chairman roles - would stay on as chairman and oversee the search for a new chief executive. “With Mr. Faber as chairman, the incoming CEO will not have the appropriate latitude to set a new direction,” wrote Artisan, which has a stake of around 3% in Danone.