National Football League teams aren't able to officially sign free agents until Wednesday beginning at 1 p.m. Arizona time. He's completed 63 percent of his passes for his career, 72 percent the past two seasons in Minnesota.
Bradford underwent season-ending knee surgery in November with hopes of curing ligament damage, but the procedure might not have returned him to full fitness. The Cardinals had Carson Palmer as their starting quarterback since 2013.
Arizona has a first-year coach in place in Steve Wilks and needs to fill out the quarterback depth chart.
Team-wise, that year also marked the most successful season Bradford has ever enjoyed as a starter.
The 30-year-old Bradford has dealt with several knee injuries throughout his career. Expect the Cardinals to land a couple more, maybe another veteran and a draft pick. He'll become the Cardinals' presumed starter as early as Wednesday since they don't now have any quarterbacks under contract. He even missed the entire 2014 season with an ACL injury.
During his first season with the Vikings in 2016, Bradford threw for 3,877 yards with 20 touchdowns and five interceptions over 15 games.