I agree, I don’t forsee them having any issues raising the money as well. Also, that area has everything your looking for in building a new stadium. The highways, access to the Metra station, hotels, restaurants, Woodfield Mall, close to O’hare, etc. Corporate businesses close by. This is will probably be most likely a private venture I would have to imagine. See article below.
https://www.si.com/nfl/bears/news/bears-confirm-purchase-of-race-track-property