The Seahawks have agreed to terms with Alan Branch, former defensive lineman with Arizona, news first reported by ESPN's Adam Schefter.

Branch, 26, has played the past four seasons in Arizona.

Branch was a second-round pick out of Michigan in 2007. Projected as a potential first-round choice, he fell after concerns about stress fractures in his legs.

Branch played four seasons with Arizona, his best two years coming in 2009 and 2010. He had two sacks in each season, but he is another big-bodied lineman acquired to deepen a position group that was too shallow last season.

Seattle had one of the league's best run defenses for the first month of the season, but never recovered after Red Bryant and Colin Cole were injured on Oct. 31 in Oakland.

Branch will be paid $8 million over two years, according to Schefter's report, but his addition does not affect Seattle's interest in retaining Brandon Mebane, an unrestricted free agent.