GREEN BAY — Upon learning that the Green Bay Packers were adding one of the NFL’s most feared pass rushers to his unit, defensive coordinator Jeff Hafley immediately got to work.

Although, to Hafley, the hundreds of game clips of new Packers edge rusher Micah Parsons he watched in the wake of the blockbuster trade didn’t much feel like work.

“All of a sudden, Micah Parsons walks in the building and, I mean, it’s game week and my mind starts going 100 miles an hour on all the ways that you can use him,” Hafley said Thursday after Parsons’ second practice with his new team.

While Hafley typically breaks down film of opposing offenses — like, for example, the Detroit Lions outfit that’s coming to Lambeau Field for Sunday’s regular-season opener — this assignment was different.

“I watched

See Full Page