I have a theory on why Greg Mattison was brought in as co-DC, he was brought in to groom Jeff Hafley, since Hafley has never been a coordinator before, it makes sense to me to bring in a veteran DC in his final seasons to teach and groom an up and coming coach. Now of course I could be wrong, but that's my theory.

The question is will we see the sort of defense that TTUN had when Mattison was the DC, or will we see something completely different. I won't lie, his defenses were really good against Urban Meyer led offenses. Its the biggest mystery at least for me when it comes to the off season.

What say you? What do you guys think the defense will look like? Like schematic wise is what I am talking about