AJ McCarron is a free man. After winning his grievance against the NFL, McCarron is officially an unrestricted free agent.

With the likes of ​Kirk Cousins and Case Keenum leading the pack, McCarron now adds another piece to an interesting quarterback market. He's attempted just 133 passes in his career but will be sought after by a number of teams. 

Steve Keim and the Arizona Cardinals should absolutely go after McCarron this offseason. There's no doubt about it. 

After the retirement of Carson Palmer, the Cardinals don't have a sufficient starting quarterback on the roster. To make matters worse, Drew Stanton, Blaine Gabbert, and Matt Barkley are all unrestricted free agents. 

The Cardinals could make a bid for one of the top free agent quarterbacks, but with what money? They have just $22 million in projected cap space and that's not enough to strike a deal with any of the big names. 

McCarron is only 27 years old and would be a great fit with the Cardinals. He'd be surrounded by one of the best running backs in David Johnson and would have Larry Fitzgerald for one final year. 

With the No. 15 pick, the Cardinals are put in a tough position to draft a first-round quarterback. It's very likely Josh Allen, Sam Darnold, Josh Rosen and Baker Mayfield are all gone in the first 10 picks. That leaves the Cardinals out to dry. 

McCarron is young, cost-efficient and has the potential to thrive under a new head coach. The Cardinals will be kicking themselves if they pass up an opportunity like this. 

It just makes too much sense.