What sticks out the most during the NFL free agency period? It has to be the age of the players the Cardinals have signed so far: 35-year-old Karlos Dansby, 32-year-old Antoine Bethea, 42-year-old Phil Dawson. Will Robert Nkemdiche, who played in only five games and recorded only three tackles as a rookie, step up in his second season this fall? What about all the departures on the defensive side of the ball? Will the defense take a step back in 2017?