Walter Tavares, one of the best 7-foot prospects in the world, is working on a contract buyout with his team in the Spanish ACB League and will travel soon to the United States to work out for several NBA teams, league sources told Yahoo Sports. Several NBA executives believe Tavares, who is 7-foot-3, has a strong chance to work himself into the first round of this month's NBA draft, and several teams choosing in the range of the 20s plan to bring him in for closer inspections, sources said. Agent Andy Miller will represent Tavares, 22, in the NBA. Tavares doesn't have a formal agreement on a buyout with Gran Canaria of the Spanish ACB, but there is momentum toward that end, sources said.