Dirk Nowitzki"s Not Eyeing Other NBA Teams, "Mavs for Life"

Dirk Nowitzki is a free agent … but the 40-year-old legend tells TMZ Sports when it comes to the NBA, it’s “Mavs for life.” Dirk and the Dallas Mavericks have already mutually agreed to opt out of Nowitzki’s contract — which included a $ 5…

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