Vince Ellis of the Detroit Free Press reports:

Pistons reject Mavericks offer for Tayshaun Prince

The Detroit Pistons have spurned the Dallas Mavericks’ efforts to acquire small forward Tayshaun Prince — at least for now.

The Mavs offered the Pistons swingman Caron Butler and a 2011 first-round pick for Prince before today’s 3 p.m. deadline, according to a person close to the situation.

Butler is out for the season with an injury, but he has an expiring deal, so the trade, basically, would be Prince for the pick. Prince also has an expiring contract.