Out of the candidates for a consolidation trade (save Birch, they're all too useful to buyout), from most to least in terms of likelihood to be on the team, I'd rank it as follows: McDermott, Graham, Osman, Bullock, Payne, Birch.
Unless it's part of a trade where they acquire a core piece, I don't see the Nets (who supposedly plan to play Simmons at PG) paying to get off him at this point because there's no incentive to otherwise.
I don't see their depth or lack there of (though downgrades, Walker IV, Smith Jr. and Bazley were signed as back end rotation replacements) as an issue for a projected play-in type team.