For many years, the Patriots identified failing prospects from other teams with the potential to succeed in their system, acquired those players at low cost, assigned them roles in which they thrived, then let them depart after a few years. Often they left as top-dollar free agents, with the Patriots acquiring supplemental draft picks from the league in exchange. They used those picks to assemble new rosters with even more role players. In a pinch, the Patriots rented the services, via trade or free agency, of a big-name veteran (Darrelle Revis, Chris Long, Brandin Cooks) eager to win a Super Bowl at Tom Brady’s side.
The Patriots were able to use success to sustain success so long as they rarely made personnel mistakes, and as Brady could still single-handedly elevate the team’s offense while rallying mercenaries to his banner. But years of unproductive drafts led to a slow cycle of diminishing returns. By last season’s quick playoff exit, the Patriots’ roster had grown noticeably patchy, and Brady was showing signs of age and displeasure.
Article source: https://www.nytimes.com/2020/12/22/sports/football/patriots-belichick.html