Roy Lopez leaves Detroit for Arizona as Cardinals reshape their line

For roy lopez, the next chapter comes with a familiar logo. The defensive tackle is headed back to the Arizona Cardinals on a two-year, $11. 5 million deal that includes $7 million guaranteed, leaving the Detroit Lions after a season in which he played every game. In Arizona, his move lands in the middle of a defensive line picture that also includes another return: L. J. Collier on a one-year, $2. 5 million contract.

roy lopez, a full season in Detroit, and a new deal in Arizona

Detroit signed roy lopez to a one-year, $3. 5 million deal for the 2025 season, and the Lions got the kind of availability teams count on up front. Lopez played in all 17 games, finishing with 30 tackles, 2. 0 sacks, and a pass defensed. His role was not framed as headline-making stardom, but as something that matters over a long season: depth that holds up snap after snap.

That production helped make him, in the Lions’ view, a “good depth player” in 2025. It also came within a defense that leaned on a strong run unit, where Lopez was described as a “big cog. ” The details of his pressure work were also specified: PFF credited him with 13 pressures on the season and a 63. 6 pass rush grade, a snapshot of an interior lineman who could contribute beyond plugging gaps.

Now the Lions are losing that piece, adding to a stretch in which their defense has “suffered yet another free agency loss. ” Lopez’s agreement with Arizona was one of multiple defensive departures that came together on a Monday, part of a broader churn that forces Detroit to replace snaps and roles, not just names.

Arizona Cardinals keep L. J. Collier while adding Roy Lopez

Arizona’s plans along the defensive line did not hinge on one move. The Cardinals are also bringing back defensive lineman L. J. Collier on a one-year contract worth $2. 5 million. It is the fourth one-year deal Collier has signed with Arizona, where he has been since 2023. The team’s approach places two different kinds of bets at the same position group: a multi-year commitment to Lopez and a familiar, shorter-term return for Collier.

Collier’s recent seasons in Arizona have swung between full availability and abrupt interruption. Last season, a knee injury limited him to four games, where he posted six tackles and two quarterback hits. In 2023, he tore his triceps in Week 1 and missed the rest of the season, meaning two of his three seasons with the Cardinals have been injury-shortened.

Still, the record of a fully healthy year is also there. In 2024, Collier played in all 17 games and produced a career-high 29 tackles and a career-high 3. 5 sacks, plus four tackles for loss and six quarterback hits. In that context, his new one-year deal reads like continuity built on a best-case version Arizona has already seen, even while recent injuries hang over the most immediate past.

Collier returns to a defensive line room that has Darius Robinson, Walter Nolen, and Dante Stills under contract. P. J. Mustipher is listed as an exclusive rights free agent and is expected to be back. Into that mix comes Lopez, a player Arizona is bringing “back” as well—another returner, but on a different contract path and after a full season in Detroit.

Detroit Lions losses, Tyleik Williams’ snaps, and DJ Reader’s decision

Lopez’s departure lands in Detroit as both a subtraction and a prompt. The Lions are expected to give 2025 first-round pick Tyleik Williams a bigger role this upcoming season after he played 446 snaps, compared with Lopez’s 425. That comparison captures the fine margins in a rotation: the difference between a role player and the next player asked to become more than that.

Even with Williams projected for more work, the Lions still “will need more reinforcements in the defensive tackle room. ” One of the reasons is timing. Veteran nose tackle DJ Reader is facing free agency, and his status remains unresolved. Reader said he would like to return to Detroit and noted that the Lions have been talking to his agent, while adding he had not had personal communication. His words leave the decision squarely in the negotiation process, and the Lions’ interior depth chart, by extension, in motion.

Lopez’s move was also not an isolated exit. He became the third Lions defender to agree to terms with a new team on that Monday. Linebacker Alex Anzalone is signing with the Tampa Bay Buccaneers, and cornerback Amik Robertson is joining the Washington Commanders. For Detroit, it means the reshaping is spread across the defense, not confined to one position group.

For roy lopez, the change is clear and immediate: a return to the Arizona Cardinals on a two-year deal after a 17-game season in Detroit. In the same week Arizona brought back L. J. Collier on yet another one-year contract, the team’s defensive front now carries two kinds of continuity—one rooted in a familiar player on a short-term agreement, the other in a player returning on a longer commitment.