Terrion Arnold, the Detroit Lions' 2024 first-round pick, showcased a promising yet challenging rookie season as a cornerback. Selected from Alabama, he quickly earned a starting position but struggled against top-tier receivers, finishing with a Pro Football Focus grade of 50.8. Early penalties plagued his play, with 11 flags including seven for pass interference. However, his performance improved significantly in the latter part of the season, displaying growth that has the Lions optimistic about his potential.

General Manager Brad Holmes noted Arnold's determination and coachability, suggesting he could emerge as a leading cornerback for the team, especially if Carlton Davis departs. Arnold's physicality and competitive nature align well with the Lions' defensive scheme, and with continued refinement in his technique, he may become a cornerstone of their secondary.

The Detroit Lions faced several challenges with their cornerback lineup during the 2024 season. Carlton Davis, acquired from the Buccaneers, stood out with impressive stats, including two interceptions and a PFF grade of 74.5. However, his future with the Lions is uncertain as he enters free agency. Rookie Terrion Arnold struggled significantly, finishing without interceptions and a PFF grade of just 50.4. Ennis Rakestraw and Amik Robertson also faced their own hurdles, with Robertson dealing with a broken arm injury. Kindle Vildor and Khalil Dorsey, key contributors, are set to enter free agency, and the Lions may look to revamp their secondary for the upcoming season.

The Detroit Lions' cornerback unit faced a tumultuous season in 2024, struggling to find stability amidst numerous changes. Despite the challenges, there were signs of promise, notably from rookie Terrion Arnold, who displayed significant growth and poise on the field. His ability to adapt improved as the season progressed, helping him avoid costly penalties.

Veteran Carlton Davis initially solidified the CB1 position until a jaw injury sidelined him. His potential absence next season leaves the Lions' secondary needing to step up, especially with several players headed for free agency. While Amik Robertson and Arnold showed flashes of brilliance, the unit's overall inconsistency raises questions about their readiness to face high-caliber offenses in 2025.

In 2024, the Detroit Lions' defense faced overwhelming challenges, with significant injuries impacting key players like Aidan Hutchinson and Alim McNeill throughout the season. Despite a promising start, Hutchinson's season ended early due to a leg injury, disrupting the team's pass rush and forcing the Lions to trade for Za'Darius Smith to maintain production. The defense managed to secure a top run defense ranking, but finished poorly in pass rush metrics, averaging only 2.1 sacks per game.

The linebacker unit saw promise from rookie Jack Campbell, who performed well in his first year, especially after stepping up as a play-caller due to injuries to veterans like Alex Anzalone and Derrick Barnes. The secondary struggled with consistency as Carlton Davis and Amik Robertson joined the team, but injuries limited their potential. Despite these challenges, Kerby Joseph and Brian Branch shone as a formidable safety duo, helping the defense stay competitive.

Aaron Glenn has officially taken over as the head coach of the New York Jets, aiming to improve the team’s defense, which was ranked 20th last season. Glenn, formerly the defensive coordinator for the Detroit Lions, is expected to pursue several players from his previous squad as he looks to bolster the Jets' roster during the upcoming free agency.

Among the players most likely to join Glenn in New York are cornerback Carlton Davis, who enjoyed a solid year with two interceptions and 11 passes defensed, and edge rusher Marcus Davenport, though his injury history raises questions about his reliability. Defensive back Ifeatu Melifonwu, despite limited games last season, showed promise and could thrive under Glenn’s system. Lastly, linebacker Derrick Barnes, who has experience in Glenn's defensive schemes, might fill any gaps left by potential free agency departures.