The Cardinals drew a lot of attention for the players they brought in during 2021 NFL free agency. They landed one of the biggest prizes in J.J. Watt, and they added A.J. Green and Rodney Hudson (via trade) to bolster their offense.A signing they made later in the offseason flew under the radar. They added James Conner in mid-April, well after the initial waves of free agency. He was expected...