Cookus impressed the Broncos enough during their rookie minicamp over the weekend for the team to sign him to become the No. 4 quarterback behind Drew Lock, Teddy Bridgewater and Brett Rypien.
Teams ordinarily keep four quarterbacks for offseason practices to help give fourth-stringers some reps.
Cookus played five seasons at Northern Arizona, suffered two early season injuries and had three excellent seasons, throwing for 105 touchdowns and 12,082 yards against just 21 interceptions.
He signed with the Giants as an undrafted free agent last year but was waived at the start of training camp.
This is just another name among many that are proving that The Spring League works. The more that these guys get a chance to get film, the better shot they have to land a spot on a professional team.
The Generals are set to kickoff the action Monday night against the Sea Lions at 7pm ET on FS1. With so many changes to the roster in such short time, can the team stay undefeated? Only time will tell.
Which players from The Spring League would you like to see make the jump to the NFL? Let us know your thoughts down in the comments below or join the conversation on Discord.