Percy Allen of the Seattle Times reports that Boston and Seattle may have already agreed to a Vin Baker for Kenny Anderson trade. He writes that the Sonics? negotiations with Rashard Lewis may be put on hold while the two teams try to hammer out a deal.

A source close to the deal says that the two teams have agreed on the trade, but another player must be added from Boston to make the trade work. Deciding on the other player has slowed talks. Boston appears willing to part with Vitaly Potapenko, a 6-10 forward/center, while the Boston Herald reported the Sonics are interested in 6-8 forward Eric Williams.

Seattle also would like to unload disgruntled guard Shammond Williams, perhaps for Boston guard Joseph Forte.

(RealGM note: According to our estimates, Baker for Anderson and Potapenko does not work within the rules of the CBA, while Baker for Anderson and Eric Williams does. If Potapenko is included by the Celtics, expect another player to be added by the Sonics, likely Shammond Williams. If Shammond Williams and Forte are added to the deal, the trade will work with either Potapenko or Eric Williams.)