rumor has it Vonleh quit on his team at Indiana. Another rumor is that Vonleh wants to play small forward.
I believe Ainge said there were character concerns about Vonleh.
Gordon is only a half inch shorter than Vonleh but way more athletic in game situations, and has a much higher bball iq.
And besides getting a superstar like Lebron, Melo, or KD, the next best thing to have is somebody that can contain those guys, which makes Gordon extremely valuable.