The Denver Broncos continued their splurge on the opening day of free agency by signing versatile defensive lineman Zach Allen to a three-year, $45.75million deal on Monday.

Allen, 25, was a third-round draft pick by the Arizona Cardinals in 2019, and after barely playing as a rookie the former Boston College student racked up 11.5 sacks and 21 tackles for loss over the past three seasons.

He spent all four of his seasons in Arizona playing for defensive coordinator Vance Joseph, who was hired this offseason to take over in charge of the Broncos' defense.

Joseph clearly liked the development he saw from the shifty six-foot-four bruiser, having deployed him in multiple different roles across the Cardinals' defensive line.

He is coming off a season where he set career-highs in sacks (5.5), tackles for loss (10), pass deflections (eight) and quarterback hits (20), despite playing in fewer games (13) than his previous record-setting season (15 games in 2021).

Allen is the latest in a string of aggressive moves from the Broncos to open free agency, having also signed offensive linemen Mike McGlinchey (five years, $87.5m) and Ben Powers (four years, $52m), as well as linebacker Alex Singleton (three years, $18m) and backup quarterback Jarrett Stidham (two years, $10m).