Powell would earn $10.2 million if he agreed to the option and be a free agent after next season. If he declines the option it will conclude his $37 million, four-year deal with the Mavs. He averaged a career-high 10.6 points in 21.6 minutes this season.
Powell turns 28 on July 20. Free agency begins July 1. He was traded to the Mavs from the Boston Celtics in December 2014 and signed his four-year deal in July 2016.
Yahoo reports several teams are interested in Powell.