His system sucks.

http://www.deseretnews.com/article/865648863/QA-with-Ty-Detmer-Talking-about-the-past-present-and-future-of-BYU-football.html

"DN: When Bronco Mendenhall announced he was leaving last fall, who called who first, you or BYU?

TD: BYU called me. Tom Holmoe (BYU athletic director) called to see what I was thinking. When it got closer and it looked like Kalani might be the guy, he called and we talked. I felt like I was going to be able to run the system I want to run. And then I like Kalani’s vision of getting it back to that home feel it had for us when we were here."