According to ESPN's Chris Mortensen Eagles QBs coach Bill Musgrave is a "hot contender" for the Raiders' offensive-coordinator vacancy.

Update:  The Raiders have hired Bill Musgrave as offensive coordinator.

Musgrave, a former Oregon quarterback, replaced Bill Lazor who left last offseason to become the Miami Dolphins offensive coordinator.
Nick Foles game.  Meanwhile Musgrave, 46, oversaw one of the least imaginative offenses in the league when he was the offensive coordianor in Minnesota from 2011-2013. This should be a huge loss for the Eagles, but more and more teams are picking away at
Chip Kelly assistants to try and pick their brain.

Every guy mentioned above except McDermott as been a head coach in the NFL, some still are.  Having good solid coaches around is a key to success in the NFL - though I don't think losing Musgrave is a huge loss, it will be third different QB coach to work with Foles since he has been here.