As the title says, MSU is under investigation for their use of planes operated by the state of Michigan for recruting trips by Dantonio and Izzo. The investigation began after the Lansing State Journal ran a series on the planes and how they are utilized. Over a five year period, Dantonio and Izzo combined for 102 flights on state-operated flights. As you likely assumed, The University of Michigan can handle it's own recruiting travel arrangements and is not under investigation.
"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."