The Pistons are intent on adding another big man before training camp, and Ben Wallace is still an option for his old team.
However, team president Joe Dumars said that the team is keeping its options open before making a final decision.
"Ben Wallace is someone we're discussing, but no decision has been made," Dumars told The Detroit News via text message.
Wallace, who was with the Pistons from 2000-2006, was released by the Phoenix Suns after being part of the trade which landed Shaquille O'Neal in Cleveland and is an unrestricted free agent.
Detroit had interest in Boston restricted free agent Glen Davis, but they appear to have soured on him.