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An unbelievable twist: Nick Bosa’s replacement is the versatile defensive lineman from the Bengals last season, who led the NFL with 17.5 sacks.

Posted on September 23, 2025 - 2:33 am by

On Monday, September 22, 2025, the San Francisco 49ers received devastating news: superstar defensive end Nick Bosa will miss the remainder of the season due to a torn ACL. The injury, sustained during a game against the Arizona Cardinals, has left the 49ers scrambling to fill the void left by their Defensive Player of the Year from 2022. Bosa was off to a phenomenal start, with 17 tackles (9 solo), 4 tackles for loss, 2 sacks, and 2 forced fumbles in just 2.5 games. His absence is a massive blow to a team with Super Bowl aspirations, prompting immediate calls from fans and media for a blockbuster trade to bolster the defensive line. The name at the top of everyone’s list? Cincinnati Bengals’ All-Pro defensive end Trey Hendrickson, who led the NFL with 17.5 sacks last season.

Why Trey Hendrickson?

Trey Hendrickson is no stranger to 49ers fans. Rumors swirled all offseason that San Francisco was a potential landing spot for the Bengals’ star during his contentious contract dispute with Cincinnati. The dispute, which failed to result in a long-term extension, leaves Hendrickson in the final year of his contract, making him a prime trade candidate as the Bengals risk losing him to free agency in 2026. Hendrickson’s 2024 season was a career-defining one, earning him All-Pro honors with a league-leading 17.5 sacks. While his 2025 stats—2 sacks, 6 quarterback hits, and a pass breakup—aren’t as dominant as Bosa’s early-season numbers, Hendrickson’s proven versatility and pass-rushing prowess make him an ideal candidate to step into Bosa’s role.

The 49ers’ defense thrives on generating pressure, and Hendrickson’s ability to disrupt opposing quarterbacks aligns perfectly with their scheme. His 6 quarterback hits this season already surpass Bosa’s pre-injury total, showcasing his knack for getting after the passer. Beyond stats, Hendrickson’s experience and leadership could stabilize a defensive line now forced to adjust without its cornerstone.

The Trade Debate: What Would It Cost?

The 49ers’ fanbase and media are abuzz with speculation about what it would take to pry Hendrickson from Cincinnati. Popular 49ers content creator @Coach_Yac proposed a package of a 2026 third-round pick and a 2026 fourth-round pick, a relatively modest haul for a player of Hendrickson’s caliber. This proposal assumes the Bengals, facing the possibility of losing Hendrickson for nothing in free agency, might prioritize draft capital over holding onto him for the remainder of a season where their playoff hopes are fading.

However, Niner Noise writer Nick San Miguel suggested a bolder trade: sending backup quarterback Mac Jones to Cincinnati along with draft picks. The Bengals’ quarterback situation is precarious, with starter Joe Burrow potentially sidelined for most or all of the season due to a turf toe injury and backup Jake Browning struggling in his first start. Jones, who has won both of his starts filling in for an injured Brock Purdy, could be an appealing piece for a Bengals team desperate to salvage their season.

But parting with Jones is a risky proposition for San Francisco. The 49ers learned the hard way with Bosa’s injury that depth is critical, especially at key positions like quarterback. Behind Jones, the 49ers lack a third-string quarterback with any NFL experience. With Purdy’s return imminent but his injury history looming, Jones serves as a valuable insurance policy. Trading him could leave the 49ers vulnerable if Purdy goes down again late in the season. Moreover, Jones has integrated well into the 49ers’ quarterback room, meshing with the team’s culture and earning praise for his professionalism. A trade package centered on draft picks or a defensive player—like a depth piece along the line—seems more feasible than sacrificing Jones.

Could Internal Options Step Up?

While Hendrickson is the marquee name, the 49ers may already have players capable of stepping up in Bosa’s absence. Defensive end Bryce Huff, for instance, is having a season statistically comparable to Hendrickson, with similar sack and quarterback hit numbers. Huff’s ability to generate pressure could see him take on a larger role, potentially blossoming into a star. Similarly, rookie Mykel Williams has shown promise and could emerge as a key contributor with more snaps. The 49ers’ coaching staff, led by Kyle Shanahan and defensive coordinator Nick Sorensen, has a track record of maximizing talent, which could allow Huff or Williams to mitigate the loss of Bosa without a blockbuster trade.

Still, neither Huff nor Williams has the proven track record of a player like Hendrickson. Relying on internal options carries risk, especially for a team with championship ambitions. The 49ers’ front office must weigh whether Huff or Williams can step into a superstar role or if acquiring a known quantity like Hendrickson is worth the cost.

The Path Forward

The loss of Nick Bosa is a gut punch for the 49ers, but it’s also an opportunity to showcase their resilience. Trading for Trey Hendrickson could provide an immediate boost, replacing Bosa’s production with a player who has already proven he can dominate at an All-Pro level. A package of mid-round draft picks, as suggested by @Coach_Yac, might be enough to get the deal done, especially given Cincinnati’s leverage constraints with Hendrickson’s expiring contract. However, the 49ers must carefully consider the risks of parting with a player like Mac Jones, whose value as a backup quarterback cannot be overstated in a league where injuries are inevitable.

Alternatively, San Francisco could lean on emerging talents like Bryce Huff or Mykel Williams, banking on their potential to rise to the occasion. The decision will come down to whether the 49ers trust their current roster to weather the storm or feel compelled to make a splash for a proven star like Hendrickson. For now, 49ers fans can only hope the front office makes the right call to keep their Super Bowl dreams alive in the face of this unbelievable twist.