 Complete the following phrase:  In 2003, the Celtics were sold by owner Paul Gaston to Boston Basketball Partners L.L.C., led by H. Irving Grousbeck, Wycliffe Grousbeck and Steve Pagliuca. The team made it back to the playoffs but were swept by the Nets in the second round, despite bringing Game 4 to double overtime. Before their elimination, the team hired former Celtics guard Danny Ainge as general manager, moving Chris Wallace to another position in the organization. Ainge believed the team had reached its peak and promptly sent Antoine Walker to the Dallas Mavericks along with Tony Delk. In return, the Celtics received the often-injured Raef LaFrentz, Chris Mills, Jiří Welsch, and a first-round pick in 