The Packers have requested permission to interview Chargers defensive coordinator Gus Bradley for their own DC vacancy, a league source tells Adam Schefter of ESPN.com (on Twitter). Schefter adds that the Seahawks and other clubs also have interest in Bradley. 
It should be noted that the Chargers do not have the ability to block Bradley from interviewing since his contract expired on Tuesday. The Bolts will fight to keep Bradley, however.
“We’d like to keep this together if we can,” Chargers head coach Anthony Lynn said recently. “I know some guys, the contracts are up. We’re working on that right now. We’re trying to keep this staff together, this nucleus together, because I think we got better as a coaching staff as the season went on.”
The Packers reportedly view Vic Fangio as their top target, though they are also considering a trio of current assistants (Winston Moss, Darren Perry, and Joe Whitt) plus former Browns head coach Mike Pettine for the job. The Seahawks, meanwhile, already have a DC in Kris Richard, but Richard has drawn head coaching consideration elsewhere. If Richard leaves, Bradley could be the pick to replace him.
The 2017 was Bradley’s first as L.A.’s defensive coordinator. The team finished ninth in defensive DVOA, a big reason for their success later on in the year.
I still don’t understand why the Chargers only signed Bradley to a one year deal. That might have been his choice, but if not then I fail to see the reasoning behind it.