Kendricks was released by the Cleveland Browns last month after being charged with insider trading. According to Tommy Rowan of the Philadelphia Inquirer, he pleaded guilty to the crimes and faces up to 25 years in prison.
Cleveland general manager John Dorsey issued a statement upon Kendricks' release: "We were told Mychal had fully cooperated with investigators as a victim. ... Recently, we were provided an update on the matter and the circumstances have changed. We are now dealing with a different set of facts and the additional information we've gathered has led us to the decision to release Mychal from our team."
On the field, the 27-year-old is an impact linebacker who spent the first six years of his career with the Philadelphia Eagles. He started 13 games last season and three in the playoffs, including the team's Super Bowl LII win.
Seattle lacks depth at linebacker, especially since K.J. Wright is dealing with a knee injury that kept him out of Week 1. There are few reliable options behind Bobby Wagner and rookie Shaquem Griffin, which could create a need for someone with Kendricks' experience.