The Seattle Seahawks have promoted safety Adrian Colbert to the active roster from the team’s practice squad, a source told NBC Sports Northwest.

Colbert was initially signed to Seattle’s practice squad on Sept. 18. The third-year safety dealt with a nagging hamstring injury throughout August and was waived/injured by the 49ers during roster cuts.

After going unclaimed, Colbert reverted back to the 49ers and was placed on Injured Reserve. He then reached an injury settlement with San Francisco on Sept. 6 and became an unrestricted free agent.

According to the source, there were several teams interested in signing the safety. Seahawks GM John Schneider has always been keen on Colbert, and the allure of playing in a similar defense to San Francisco’s was the tipping point in Seattle’s favor.

The source said that the plan all along was to have Colbert join the active roster. The week on the practice squad was intended to give Colbert’s hamstring extra time to get healthy.

“We’ve had our eye on him for a couple years and this was a great job by John and Nolan (Teasley) and the guys that kept track of him to get him in the program,” Pete Carroll said of Colbert last week. “We really think he’s got great potential. He’s really fast, he’s really tough.

“He’s just one of those guys to me that demonstrates the kind of energy that we really like when we play. He loves to run and hit now. He’s really fast, running 4.3s. He’s 211 pounds yesterday. Big kid. Strong kid. He’s kind of (got a) spirit about him, too. He kind of fired me up.”

Colbert was originally drafted by the 49ers in the seventh round (229th overall) in the 2017 NFL Draft. He appeared in 21 games (12 starts) over his two seasons in San Francisco, accumulating 53 total tackles, six passes defended, two forced fumbles and a fumble recovery.

Lano Hill has started the last two games at free safety for Seattle. It will be interesting to see how quickly Colbert can earn himself game reps. He'll be in the mix along with Tedric Thompson and Marquise Blair.

UPDATE: Gary Jennings' latest tweet indicates that he was the roster casualty in order to make room for Colbert. Jennings will be subject to the NFL waiver system. If he goes unclaimed, Seattle will likely try to bring their 2019 fourth-round pick to the practice squad.

UPDATE TO THE UPDATE: It turns out that Seattle opted to keep Jennings. Adam Schefter reported that the Seahawks had waived the fourth-round pick, but Seattle then rescinded the waiver claim. Instead, they've opted to waive undrafted rookie DT Brian Mone. There are still ambiguities into the logistics of the move. We'll have more details as they become clear.