This article in Crain's says he wants to buy the Book Tower, Book Building, Penobscot Building, Albert Kahn Building and the Fisher Building. Those buildings total 2436000 square feet, and would cost (in my totally uneducated guess) at least $50 million. On top of the 3.5 square foot Packard Plant he already has, which has a restoration estimate of $420 million. Holy hell, thats a lot of money to scrape together. And even more square footage to manage.