I entirely understand them being left off, as they haven't really played amazing competition, but I would probably give them a little love and sneak them in the top 25. They are 3-0 and have 2 wins over BCS opponents. I would probably switch them with ISU or Michigan, but you could make a case for all three to be right on the fringe.
"The University of Illinois is also in turmoil. The university sports an Interim Chancellor, an Interim Athletic Director, and an Interim Football Coach; the game will be played at Soldier Field, making this an Illini Interim Home Game."