Roos, 27, wound up signing on with the Seahawks as an undrafted free agent out of Purdue back in 2017. He made the 53-man roster as a rookie, but has been on and off of the practice squad the past few years.
The Seahawks re-signed Roos to a one-year exclusive rights contract this past April.
In 2019, Roos appeared in seven games with the Seahawks and has appeared in 14 total games with the team over the course of his career.
Aruna, 26, was drafted by the Vikings in the sixth round out of Tulane in 2018. He signed a four-year, $2.6 million deal, but spent the entire season on injured reserve.
Minnesota waived Aruna with an injury designation during final roster cuts at the end of the preseason and he later reverted to their injured reserve list. The Vikings waived him a few weeks after with a settlement. He later signed on with the Raiders practice squad in December and has not yet made his NFL debut.
During his four-year college career, Aruna recorded 107 total tackles, 11 sacks, three forced fumbles, three recoveries and four pass defenses in 37 games.