Yamaha rider Rossi , 27 , has won motorcycling 's top category for the last five years .
Yamaha rider Rossi , 27 , has been linked with a move from two wheels to four after several tests with Ferrari .
Yamaha rider Rossi , 27 , has won motorcycling 's top category for the last five years and has been linked with a move from two wheels to four after several tests with Ferrari .