I could think of 11 millions reasons why he would come back, and only with the Cards. He would not be paid that much to play for another team. I think it goes to what most players say in this day and age. Their body will tell them when it's time to say good-bye. Previous eras players played until they could no longer earn a check, but with today's money they go when they know they can no longer do it at "their level".