Radio station 1310, the Ticket, is reporting that Cowboys LB coach Gary Gibbs will be joining Sean Payton and the New Orleans Saints as their defensive coordinator. I haven't found any links to articles supporting this, but it's a good bet considering all the chatter over it in the last week.
Replacing Gibbs could be current Cowboys TE coach Paul Pasqualoni or possibly Jim Herrmann from Michigan. USA Today reported this item last week.
Pro Football Weekly has this tidbit in its "The Way We Hear It" section: