Rod Thorn must have liked what Chris Quinn gave the Nets last season. The new 76er president signed Quinn to a non-guaranteed training camp contract Thursday. That leaves four Nets from last season without an announced destination: Josh Boone, Trenton Hassell, Jarvis Hayes and Bobby Simmons. Shawne Williams, who the Nets released after his arrest on drug charges last season, was also signed to a training camp contract Thursday. The Knicks are giving him a shot.