NFL Insiders predict: Players with the biggest impact on new teams

Our panel of ESPN NFL Insiders is breaking down what all the offseason action means for the 2018 season throughout the week.
Next up: Which offseason addition -- via free agency, the draft or trade -- will make the biggest impact this year?
Insiders make their picks, plus dig into these topics:
Teams that improved the most this offseason
  • Teams that declined the most

  • Which offseason addition will make the biggest impact in 2018?

    Matt Bowen, NFL writer: Tyrann Mathieu, S, Houston Texans. His past injuries have to be discussed, but the former Cardinal played faster on tape toward the end of 2017. He's an upgrade in Houston at a position of need, and defensive coordinator Romeo Crennel can utilize Mathieu's versatility in the game plan. Think of a defensive matchup weapon here who can find the ball and play multiple roles for a secondary that struggled last year.