While there are still a lot of terms like “likely” and “expected” involved, the churn of the Dallas Cowboys’ coaching staff is clearly underway. After several years with one of the most stable groups of assistant coaches in the NFL, the team is going to have multiple vacancies to fill. At this time, the all-but-done openings include tight ends coach (retiring Steve Loney), special teams coordinator (Rich Bisaccia, lured away to join Jon Gruden’s presumed new staff for the Oakland Raiders), quarterback coach (Wade Wilson, not retained by the team), and secondary coach (Joe Baker, also not retained).