April 9 (Reuters) - MotoGP reigning champion Fabio Quartararo is in talks with other manufacturers regarding a possible move away from Yamaha at the end of the season, the French rider's manager, Eric Mahe, said. Yamaha's Quartararo became the first Frenchman to win the title last season, ending nine years of Spanish dominance, but things have been far from ideal for him this season. Quartararo came second...