GREEN BAY — A blockbuster deal brought a new wrinkle to the NFL’s oldest rivalry. The Chicago Bears visit Lambeau Field tonight, just in time for star pass-rusher Khalil Mack to potentially make his debut in the season opener against the Green Bay Packers. A premier player joins what figures to be an already tough defense. Defensive lineman Akiem Hicks can’t hide his glee. “When we got him, I was just so excited just to have such a prolific pass-rusher next to me.