Detroit Pistons center said he is "50-50" about whether he will retire or return to the Pistons next season.
WTVR-TV in Richmond, Va. reported Saturday that Wallace, who has played 17 seasons in the NBA, said some of his decision will be based on how he performs in the summer league in sponsors in Richmond.
"I'll be out here," Wallace said. "How much of a player (he still is) remains to be seen."
The Pistons have yet to announce if they will make an offer to Wallace. They drafted center Andre Drummond in the first round of last month's NBA Draft.
Wallace has averaged 9.6 rebounds and 5.7 points a game in his career. However, last season he averaged 4.3 rebounds and 1.4 points, the worst averages since his rookie season.