Ray was traded again, this time on June 28, 2007 during the 2007 NBA Draft, from the Seattle SuperSonics to the Boston Celtics for Wally Szczerbiak, Delonte West and the Number 5 overall pick.
Ray scored a career high 54 points on January 12, 2007, going 17-32 from the field, 12-12 at the line and 8-12 from 3-point range in a 122-114 overtime victory over the Jazz.
Ray: The guys that we have potentially may or may not be here next year. Organizationally, if our chances are slim to make the playoffs, we have to focus on who is going to be here in the future. It seems like a logical move. Our young guys have been playing well. It does get frustrating when you feel like you have to play for next season.