Special-teams coordinator Danny Crossman isn't expected to return to Detroit Lions coach Jim Schwartz's staff next season.
Crossman, who was under fire publicly early in the season for the team's poor coverage units before eventually fixing the problems, is likely to end up in Buffalo on new coach Doug Marrone's staff. Crossman and Marrone are close friends and former teammates.
Meanwhile, Bobby Johnson is reportedly going to be added to the staff by Schwartz, possibly as the tight ends' coach. If so, Tim Lappano could move from tight ends to running backs coach.
Johnson was most recently the tight ends coach for Jacksonville. He also has considerable experience coaching on the offensive line.
None of the moves had been confirmed by the Lions as of Monday afternoon.
The Lions have had openings for a receivers coach, running backs coach and offensive line coach. Shortly after the season, it was revealed that Shawn Jefferson (receivers), Sam Gash (running backs) and George Yarno (O-line) weren't going to return in 2013.
Crossman was supposedly going to be back, but that evidently started to change as soon as his buddy got the Bills' job.
Speculation on a possible new special-teams coordinator for the Lions has centered on Alan Lowry, who worked with Schwartz for a decade when both were assistants in Tennessee.