East Rutherford, NJ (Best E Casino) - The New Jersey Nets exercised a fourth- year option on center Josh Boone and third-year options on forward-center Sean Williams and forward Yi Jianlian on Thursday while declining a fourth-year option on guard-forward Maurice Ager.

Boone, Williams and Yi are now signed through the 2009-10 season. Per team policy, terms of the agreements were not released.

Boone was selected by New Jersey with the 23rd pick in the first round of the 2006 NBA Draft out of Connecticut. The third year pro has appeared in 131 games in his first two seasons with the Nets, averaging 6.3 points and 5.2 rebounds in 18.6 minutes.

Williams, drafted 17th overall in the first round of the 2007 NBA Draft by New Jersey, appeared in 73 games as a rookie. He averaged 5.6 points, 4.4 rebounds and 1.5 blocks in 17.5 minutes and was selected to the 2008 Rookie All-Star team.

Yi was selected with the sixth pick in the first round of the 2007 NBA Draft by Milwaukee. He was traded to New Jersey, along with Bobby Simmons, for Richard Jefferson in June. In 66 games with Milwaukee, the Chinese national averaged 8.6 points and 5.2 rebounds in 25 minutes.

Ager was selected by the Dallas Mavericks in the first round, 28th overall, of the 2006 NBA Draft. He was acquired by the Nets along with Devin Harris, Trenton Hassell, DeSagana Diop and Keith Van Horn, along with Dallas' first round draft picks in 2008 and 2010 and cash considerations from the Mavericks in exchange for Jason Kidd, Antoine Wright and Malik Allen in a blockbuster trade this past February. In his first two NBA seasons, Ager played in 58 games with Dallas and New Jersey, averaging 2.1 points and 0.6 rebounds in 6.5 minutes.