I don't want to sound like a total ass even though I am located at such. But, did you think.... Casey had a lifetime contract with Ducati until elegible to draw social security retirement? This stuff happens all the time with all professional riders and drivers from all teams. Contracts are made for a period of 3 to 5 years, If the rider/driver is happy with the current team and the team can substantiate their pay then there's no problem and a new contract goes underway. Now, eventually the team/sponsor opt to let the rider go if not satisfied with the rider or can not pay what the rider demands. You think Valentino will stay with Yamaha forever?