NFC North free-agency update

[Editor’s note: This free-agency update comes from a variety of online resources. It includes re-signings, new signings, losses, and remaining free agents. If we’ve missed any, let us know.] Chicago Bears Signed:  WR Domenik Hixon (Panthers); DE Willie Young (Lions); S M.D. Jennings (Packers);  DE LaMarr Houston (Raiders); S Ryan Mundy (Giants); LB Jordan Senn…