Communicate, lay out the rules of the exchange for open discussion, sign a wallet and his intentions, take up bets from other people who also have shown an interest.
Instead he didn't do anything, just saying how busy he is and waiting it out to buy time.
Why the hell should he? He said he was ready to roll and that's all he needs to do until the other personage supplies more details. I wouldn't bother to personally satisfy the feverish desires of every reader here either.