The Seahawks and Michael agreed to a contract Thursday, John Boyle of the team's official site reports.
Michael split time between the Cowboys and Seahawks in 2015, ultimately racking up 54 carries for 243 yards and three catches (on five targets) for 16 yards across eight games. With his knowledge of Seattle's running scheme in the back pocket, he can safely be penciled in as Thomas Rawls' (ankle) primary backup at this point in the offseason.