DeKALB | NIU’s depth chart is simply a piece of paper, not a binding contract.   Huskie head coach Jerry Kill said he’s looking for depth during camp before the team’s season opener against Wisconsin on Sept. 5. One position that has caught Kill’s eye in particular? Tailback.   “We’ve got, shoot, about 400 of them in camp, you ought to think we find two; one, two or three,” said Kill of finding a starting running back. “You’...