Patterson spent last season with the Giants after eight years in Philadelphia. He played in all 16 games for the first time since 2009 and made 35 tackles (22 solo).
In nine years, Patterson has played in 131 regular-season games with 100 starts, and started seven postseason games.
Bowman played his first six seasons with the Bears. His career statistics include 151 tackles (131 solo), 10 interceptions, 19 passes defensed, two forced fumbles and five fumble recoveries, two for touchdowns. He also plays special teams.