It's been like...14 hours since Hayward decided. Give the guy some time.
I also fully expected that he had at least one contingent trade agreed on. It's not like he figured out yesterday that he'll be signing Howard...
Why?
During FA things change from minute to minute. A "contingent" trade is going to be a lowball offer from someone else since it wouldn't depend on any changes from FA.
For example, let's just say Danny's shopping Crowder to you as a GM. You think that there's a chance you might be able to acquire PJ Tucker or CJ Miles during this offseason. So your offer is going to be extremely low as you factor in the contingency of signing Tucker/Miles and therefore not having nearly as big of a role for Crowder. Or, vice versa, let's just say you're Utah. With Hayward gone someone like Crowder looks a lot more attractive.
I'm sure Danny has had more than preliminary discussions with teams but he knew he'd have days to shop the players to get the best deals. That a deal wasn't prearranged isn't surprising at all because the NBA landscape is changing from day to day.