Rumor swirling is that when he signed the contract there was a unwritten commitment that they would keep his brother also. That is the reason why he signed a contract for less than he is worth.
Having said that I would absolutely take Morris, if that rumor is true he has a legit gripe (as childish as it might be). It also feels as though the PHX front office has a hard time keeping their players happy (Morris, Dragic, IT), so maybe the problem is actually with management and not the players?
So putting it together, Morris signs a favorable contract to guarantee his brother stays on the team, they trade his brother, lose his trust, and now he wants out. So now we can potentially land a solid player with a favorable contract with no strings attached? Yes please.