First, let me say sorry, I'm on the road and replying using my phone so I may make a few posts where one would have done.
Bill and the club are not going to play hardball. The quick and easy way to do this with a small number of properties is to invite all the owners out for a nice meal, give them a big brown envelope that has an offer for their property, a nice offer, the phone number of an agent that will help them find a new home, the number of a moving service that will pack and move them.
And a line that says its everyone agrees or no deal.
The last thing Bill is going to want is to look like the rich American being an asshole. That isn't the way he works.