Johnson agreed to terms with the Raiders on a one-year deal Monday, Adam Schefter of ESPN reports.
Johnson now will leave Buffalo, where he's spent the past four seasons, and head out west to Las Vegas. The 2019 sixth-round pick is coming off of his most productive campaign, registering 32 tackles (16 solo) and an interception while playing on both defense and special teams. The 27-year-old will likely serve as a reserve safety in addition to playing on special teams for the Raiders next season.