Ducati has announced that double MotoGP champion Casey Stoner will return to the Italian manufacturer's ranks as a brand ambassador and test rider. The news comes just minutes after Honda announced that the 30-year-old Australian was quitting his testing role with the Japanese factory, ending a five-year relationship with HRC. Stoner said: "It's been a great journey with HRC over the last five years, winning the World Championship in 2011 was obviously a high point and I've made many friends and formed lasting relationships along the way," Stoner said. "For 2016 I am very excited to announce that I will again be joining the Ducati team! I have so many great memories working with the people and the brand of Ducati and the opportunity to work with them again is something very special. "Gigi Dall'Igna has brought with him a new approach and I'm looking forward to assisting the team, Andrea Dovizioso and Andrea Iannone however I can. "The Ducati brand and the Ducati fans have been such a big part of my career and my life, so it will be really great to reunite the relationship and start another chapter with this iconic brand.” Stoner won 23 races for Ducati between 2007 and 2010, taking the title for the team in 2007, but since his switch to Honda in 2010 the factory has not claimed a grand prix victory since his departure.