Michael Dugat takes a look at 20 free agents who would be the best fits for the Mavericks and classifies them by what Dallas should be willing to give to land them. The only two free agents for whom he is certainly willing to part with Roddy Beaubois are LeBron James and Dwayne Wade.
↵He isn’t willing to deal Beaubois…or Caron Butler for Chris Bosh or Carlos Boozer. Those two, Rudy Gay, Jo Johnson, Amare Stoudemire, David Lee, Ray Allen, and John Salmons are the only guys for whom DB.com would collectively use Dampier as a trade chip. They are also unwilling to consider Raymond Felton because the Mavs already have Jason Terry and JJ Barea.
↵I will just say that if these are the primary options available to Dallas (granted, that assumes that there isn't much of a standard high salary trade market, and there probably will be one), and Dallas takes this approach to its assets, not much is going to happen this summer.