In this Feb. 11, 2009, photo, Milwaukee Bucks' Charlie Villanueva(notes) dunks during an NBA basketball game against the Indiana Pacers in Milwaukee. A person with the knowledge of the negotiations says the Detroit Pistons have agreed in principle to contracts with free agents Ben Gordon(notes) and Villanueva.

FILE - In this March 14, 2009, file photo, Chicago Bulls' Ben Gordon(notes) goes for a 3-point basket against New Orleans Hornets during an NBA basketball game in Chicago. A person with the knowledge of the negotiations says the Detroit Pistons have agreed in principle to contracts with free agents Gordon and Charlie Villanueva(notes).

FILE - In this Friday, Nov. 7, 2008 file picture, Chicago Bulls' Ben Gordon(notes) reacts after making a three-point shot against the Phoenix Suns in the fourth quarter during an NBA basketball game in Chicago. Gordon is an unrestricted free agent and was in Michigan on Wednesday, July 1, 2009 for talks with Detroit Pistons president for player personnel Joe Dumars, according to a person close to the talks.

In this photo taken Tuesday, June 3, 2008, Detroit Pistons president of basketball operations Joe Dumars talks to the media in Auburn Hills, Mich. The Detroit Pistons fired coach Michael Curry on Tuesday June 30, 2009, as the team started rebuilding from an unpopular trade, a sub-.500 record and an embarrassing first-round exit from the playoffs that ended its six-year streak of making it to the conference finals.

FILE - In this May 22, 2008 file photo, Detroit Pistons head coach Flip Saunders is shown during Game 2 of the NBA Eastern Conference basketball finals in Boston. The Detroit Pistons fired coach Michael Curry on Tuesday June 30, 2009, as the team started rebuilding from an unpopular trade, a sub-.500 record and an embarrassing first-round exit from the playoffs that ended its six-year streak of making it to the conference finals. Last year, Dumars fired coach Flip Saunders after he led the team to the conference finals in each of his three seasons. Curry was an assistant under Saunders for one season.

In this Feb. 19, 2009 photo, Detroit Pistons guard Allen Iverson(notes) shoots a free throw against the San Antonio Spurs in the third quarter of an NBA basketball game in Auburn Hills, Mich. Free agency opens in the NBA on Wednesday, July 1, 2009, and Iverson could provide instant offense for some NBA teams.