NOTHING DOING: John Galliano has a fan in Diesel chief Renzo Rosso. “Who wouldn’t like to work with him? If he ever got back his name, I would be the first to produce his collections,” said Rosso, who controls Staff International, the Italian clothing manufacturer. Diesel and Staff International are under the OTB SpA umbrella, as well as Brave Kid Srl, which produces children’s collections for brands including John Galliano. Rumors intensified in Milan this week that Rosso might be considering a deal with Galliano, perhaps even tapping the designer for the Margiela brand. As intriguing as that scenario might be, there’s no truth to it: Renzo firmly denied the rumor before the Just Cavalli show.