The Raiders placed Brown (hand) on injured reserve Tuesday.
Brown missed Las Vegas' matchup versus the Rams last Thursday due to a hand issue, and he's since been placed on injured reserve and is now slated to miss at least the next four contests as a result of the transaction. In the 27-year-old's absence, Darien Butler, Luke Masterson and Denzel Perryman are in line to handle most of the Raiders' linebacker duties for the rest of the regular season.