We're months removed from his chaotic time coaching the Chicago Bears, and it's still impossible to overstate Matt Eberflus's disastrous work with the NFL's charter franchise. He didn't know how to use timeouts.

Dallas' new defensive coordinator carries a well-earned reputation for safe playcalling. Whether or not that's a winning formula depends on more than just him.

In his new introduction and re-introduction to Dallas on Tuesday, Eberflus said his goal for Dallas’ defense is ‘pretty simple.’