The NFL free agency period has seen several significant player movements that could drastically impact fantasy football leagues. While the high-profile signings tend to garner the most attention, the quieter signings often yield the most surprise performances. Fantasy managers are advised to keep an eye on these potentially undervalued players as sleepers for the 2025 season.

Joshua Palmer, now with the Buffalo Bills, is expected to thrive under Josh Allen's guidance. His ability to create separation against man coverage makes him a valuable WR3 option. Evan Engram's move to the Denver Broncos could revitalize his career, especially in a system that prioritizes tight ends. Meanwhile, Justin Fields' shift to the New York Jets enhances his appeal as a QB1, despite his past struggles as a passer. Dyami Brown, joining the Jacksonville Jaguars, is also a name to watch, particularly if the team utilizes him effectively in the offense. Lastly, Najee Harris's transition to the Los Angeles Chargers presents an opportunity for a breakout season, especially with a potential offensive line upgrade.