Where will the 49ers’ next defensive coordinator come from?

Following the HC & GM search from afar, I can’t help but wonder just how much the wait for Kyle Shanahan is putting us in the back seat with regards to assembling a coaching staff, especially when it comes to the DC position. Obviously, there’s the cautionary tale of the Jets who didn’t want to wait for Dan Quinn and Shanahan and instead grabbed Todd Bowles two years ago.