Crennel reunites with offensive coordinator Charlie Weiss and General Manager Scott Pioli, both of which were with Crennel at New England when the Patriots made their Super Bowl run.
Haley, who has been operating the Chiefs with nothing more than a skeleton staff, is putting together one of the more formidable assistant duos the league has ever seen.
It remains unclear as to whether or not former defensive coordinator Clancy Pendergast will remain with the organization, possibly as a defensive backs coach, but NFL.com has reported that he will, indeed, be terminated upon Crennel's official hiring.
Crennel is still under contract commitments with the Cleveland Browns and will be allowed to enter the Chiefs organization after the Super Bowl. Crennel will also be coaching the East team in the East-West college football all-star game on January 23rd in Orlando, Florida.
Just as most newly appointed coordinators do, Crennel is expected to bring in an assistant of his own. In this case, it will most likely be linebacker coach Gary Gibbs. Defensive line coach Tim Krumrie has left the team and will most likely travel to Washington to serve under the Redskins' new defensive coordinator Jim Haslett.