The Detroit Lions have yet to make a decision on the future of defensive coordinator Kelvin Sheppard. Chances are, he'll remain at the position. But if head coach Dan Campbell is committed to building a Super Bowl-winning staff, then the perfect DC has fallen into his lap -- and it's definitely a callback.
The Cleveland Browns' firing of head coach Kevin Stefanski has already created buzz about him as a potential offensive coordinator candidate for the Lions, but his firing has also led to one of the top DCs in the league becoming a free agent: Jim Schwartz.