hes at the point in his career where he doesnt want to do anything in the offseason, doesnt want to do training camp. hes probably tired and bored and upset that hes not the focal point of their offense anymore. hes probably going to be asked to restructure and take a pay cut. hes got nearly every record he needs, hes going into the Hall. hes set for life and if he even sniffs that the Chefs cant win another SB with how theyre set up, he probably says f it and hangs them up.
you see this all the time. future HoF veterans dont want to do the work off the field when they get older. the grind is real, and the older you get, it gets worse.