NFL.com senior writer Steve Wyche reported Manusky is at or near the top of Dallas Cowboys coach Jason Garrett's interview list for defensive coordinator. Manusky also is expected to gain strong consideration from the San Diego Chargers after defensive coordinator Ron Rivera was hired by the Carolina Panthers, according to NFL Network insider Jason La Canfora.
Davis is the second defensive coordinator fired by Whisenhunt in his four seasons in Arizona. Clancy Pendergast was dismissed after the team's run to the Super Bowl in the 2008 season.
The Cardinals were 5-11 and last in the NFC West this season after winning the division the previous two years. Arizona wound up 29th out of 32 teams in total defense, 22nd in passing defense and 30th in run defense. Only the Denver Broncos (471) and Dallas Cowboys (436) allowed more points than the Cardinals' 434.
The Associated Press contributed to this report.