The UFC need Diaz back, they are crying out for his drawing power these days. And we know Diaz has enough money now that he isn't going to be strong-armed into fighting someone who will just lay n pray him. Diaz vs Brown would give both guys what they want - a firefight with a live contender in a high-profile match. It's the right move. And I wouldn't be surprised if Dana called it a title eliminator (even though Nick doesn't merit a title eliminator fight at this point in time).