I say keep Crawford and trade Brooks. I don't like MarShon either, but Crawford at least has a 3 point shot and showed decent defense last year. 2 second round picks is a good haul for him.
I'd rather trade Crawford between the two of them. They're both chuckers, but Crawford is on the last year of his deal and was a nightmare in Washington on a team filled with young guys that sucked (which is basically where we are going).
We'd be better off getting rid of the guy with history of problems when playing for bad teams and keeping the guy we have more control over.
Also, if the rumor is true it appears that Marshon is already being over-valued by some people above (welcome to the Celtics!). He was worth less than a low 2014 2nd round pick as of five days ago based on these rumors...not sure why he'd be worth more now.
I wouldn't say he is being overvalued. I think as it stands now he probably isn't worth a couple second rounders, but he has the potential to be worth that and more.
He looked like a steal from the 2011 draft as a rookie, but his playing time got cut in half because the Nets brought in Joe Johnson.
He is a developmental project. We could move him now for basically nothing or we could hold onto him and hope with significant minutes he can improve. He is a high volume scorer that could be a future sixth man Nate Robinson/Jamal Crawford/Jason Terry type role player for a contender.