The state of Indiana is currently accepting bids from private operators to run the Hoosier State once its contract with Amtrak is up in October--even though it could let Amtrak continue running the train until next February.
It's rumored that IN DOT is pretty unhappy with the way Amtrak is currently operating the Hoosier State. Assuming that the state lets another operator run the train, it's likely that the new operator will have to find a new home in Chicago. This map shows that there are two options: LaSalle Street Station and Millennium Station.
The plan is pretty doable for the likes of First Group, RATP Dev, or anyone who potentially replaces Amtrak since Union Station is overcrowded.