The Dallas Mavericks are signing forward Naji Marshall to a three-year contract extension valued at about $52.5 million, according to reports from multiple outlets. The deal is described as fully guaranteed in one report, with the total reported figure ranging slightly between $52.2 million and $52.5 million depending on the source. The extension keeps Marshall with Dallas through the 2029–30 season. The Mavericks’ move follows a productive first year with the team, when Marshall averaged a career-high 15.2 points over 74 games. Reported figures also frame the contract as an agreement reached after Marshall’s career season in 2025–26. Taken together, the coverage indicates the team is retaining its veteran swingman based on his elevated scoring output and stable role during the most recent regular season. Terms beyond duration and total value, including specific season-by-season breakdowns or player options, are not detailed in the provided summaries.