Giants linebacker Antonio Pierce is "cautiously optimistic" that he'll avoid felony gun possession charges, a source told ESPN.com. A Manhattan jury will vote Monday whether or not to clear Pierce of any charges stemming from a November incident in which former teammate Plaxico Burress shot himself in the leg. Pierce had a secret two-day testimony before the Manhattan grand jury investigating the weapons possession charges against Burress. "Some of the questions [from the grand jury] were accusatory, but most of them were helpful from Antonio's standpoint," said a source. According to investigators, Pierce took Burress to the hospital after the incident and then drove home with the receiver's Glock 9 mm .40-caliber handgun in his glove compartment.