The Boston Celtics are finalizing a sign-and-trade deal that will land them shooting guard Courtney Lee, NBA sources told Yahoo! Sports.

The Celtics will part with JaJuan Johnson, Sean Williams and E'Twaun Moore, along with a Charlotte Bobcats second-round draft pick Boston had acquired from the Oklahoma City Thunder as part of the Jeff Green settlement. Lee could fill the Celtics' starting shooting guard vacancy created by the departure of Ray Allen. That would allow Jason Terry to continue the sixth-man role he had in Dallas.

Lee averaged 11.4 points and shot 40.1 percent from 3-point range last season, but the Rockets also have Kevin Martin, newcomer Gary Forbes and rookie Jeremy Lamb on the roster. Johnson averaged 3.2 points and 1.6 rebounds as a rookie for Boston last season.