At his age, Peterson isn't going to reset the cornerback market, but he is still likely to command a fair bit of guaranteed cash in free agency. If he brings his price down just a bit, though, he would make a ton of sense for Arizona.
The Cardinals could then use any cap savings to address their other cornerback spots and/or their pass rush. Arizona ranks a mediocre 16th in passing yards allowed and has registered just 29 sacks as a team. Star pass-rusher Chandler Jones—who is out for the season—will be entering the final year of his contract next season.
Aside from his six-game suspension last year for violating the league's policy on performance-enhancing drugs, the Cardinals haven't known life without Peterson since he was drafted in 2011. There's little reason for them to get acquainted with it now.
Ranking Most Likely Landing Spots for Patrick Peterson in 2021 NFL Free Agency | Bleacher Report | Latest News, Videos and Highlights