As the NFL free agency frenzy continues, Najee Harris, Rico Dowdle, and Jordan Mason emerge as key figures on the move, each with distinct implications for dynasty fantasy football managers. Najee Harris, now with the Los Angeles Chargers, has an opportunity for substantial volume given the vacated running back attempts. However, a potential draft pick could dampen his long-term value, making him a candidate to sell early. Rico Dowdle's situation with the Carolina Panthers looks promising as the backup to Chuba Hubbard, but his one-year contract raises questions about his future past this season. Meanwhile, Jordan Mason's landing with the Minnesota Vikings offers a chance for increased touches, especially with Aaron Jones's injury history. Dynasty managers are advised to consider the current landscape carefully.