CB Patrick Peterson is the Cardinals' highest-profile free agent at a position in flux. The Cardinals cannonballed into free agency, signing J.J. Watt to a two-year deal. The work isn't done, as GM Steve Keim must fill other holes on the roster this offseason. The new league year begins on Wednesday, March 17, with the legal tampering period opening on Monday, March 15. We will break down each position group as free agency draws near. Free agent primer: Cornerback Cap hit of players under contract for 2021 (via OverTheCap.com): Robert Alford ($9 million); Byron Murphy Jr. ($2.18 million); Jace Whittaker ($780,000); Picasso Nelson ($660,000). Need: High