How about
#13, Vince Carter (3.18 m), Jared Cunningham (1.208 m)
for
2013 2nd, Williams (947k), Randolph (1.1 m), White (1 m)
(I think my math is correct but if not just take Cunningham out of the trade)
Saves the Mavs a bunch of cap room by getting them a bunch of non-guaranteed contracts and a non-guaranteed 2nd rounder for contracts next year and a pick (all of which take up cap room). I'd probably be willing to throw in a heavily protected future 1st if required.