Which coordinators could be head coaches soon?

Ah, January in the NFL.

Until “American Idol” kicks off next week, there is no more exhilarating audition process.
This is the time of year when NFL offensive and defensive coordinators burnish their resumes and put themselves in line for a gig as The Man. The Browns’ decision to hire Eric Mangini and roll the dice again with another former Patriots defensive coordinator — hey, it worked so well the first time — leaves five head-coaching vacancies with more possibly on the way.
There are 16 coordinators, eight on each side of the ball, still scheming against one another in the playoffs. Some of them are no doubt fearing the trend of lower-level assistants (John Harbaugh, Tony Sparano) leap-frogging coordinators and having success as head coaches. Some have had their chances, some will never get theirs.