The NFL Players Association president for the past two years has been J.C. Tretter, the center for the Cleveland Browns. He will also act as president for the NFLPA over the course of the next two, after being unanimously voted to retain the title in an uncontested election this past week.
Tretter was officially elected president on March 10, 2020, which was just days after the NFLPA formally ratified the latest Collective Bargaining Agreement between themselves and the NFL. He was resistant to that CBA deal, and remains so, and has been an outspoken advocate for his peers to a greater extent, at least in my impression, than his predecessors.