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The worst-case scenario hit the 49ers this weekend: Nick Bosa has a torn ACL in his right knee and is out for the remainder of the season. Bosa tore his left ACL in 2020 and the 49ers finished 6-10 that season. Since Bosa was drafted #2 overall in 2019, San Francisco is 57-28 with him and 6–12 without.
There’s no sugarcoating it. Bosa isn’t just an elite pass rusher; he’s a gravitational force. He draws double-teams, wrecks blocking schemes, and closes out games with strip sacks — like he did in the Week 1 win at Seattle. In the locker room, he’s a tone-setter. He looked determined this season to climb back toward the top of the edge rusher rankings. Now? The 49ers’ young defensive line has to grow up fast.
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Internal Options
The first priority is finding answers inside the building.
• Bryce Huff has speed to burn and can pressure quarterbacks, but he doesn’t set the edge in the run game.
• Sam Okuayinonu has flashed and could see more regular reps.
• Robert Beal is coming off a groin injury but hasn’t shown much in limited time.
Put simply: there’s no replacing Bosa. What the 49ers can do is patch together a rotation and hope it holds until the trade market shakes free.
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The Hendrickson Factor
If general manager John Lynch decides the internal answers aren’t enough, one name jumps off the page: Trey Hendrickson.
The Bengals were blown out 48-10 by Minnesota on Sunday, and with Joe Burrow sidelined, their season looks like it’s going nowhere. Hendrickson is in the final year of his contract, carrying a cap number of just over $25 million. He’d likely cost a first-round pick, or some combination of picks, but he’s the closest thing to Bosa on the market.
The 49ers have around $25 million in cap space. With some financial gymnastics, they could make a Hendrickson deal work. A creative package — Mac Jones, who may be headed back to the bench with Brock Purdy’s health improving, would be a major upgrade over current Bengals number two Jake Browning, maybe a second rounder plus a conditional pick — could get Cincinnati’s attention.
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Other Possibilities
• Will McDonald (Jets): Drafted by Robert Saleh, posted 10.5 sacks last season and already has two in 2025. Would cost a premium pick. Jets are 0-3 and going nowhere again, McDonald has a reasonable contract.
• Kayvon Thibodeaux (Giants): Playing on the final year of his rookie deal, and the Giants are 0-3. Any deal would likely require a first-rounder. He’s in the last year of his rookie deal. With 2025 first-rounder Abdul Carter and Brian Burns signed long term, New York could move the former first round pick.
• Shaq Barrett (Free Agent): At 33, hinted at a comeback last week. His Last double-digit sack season came in 2021. Strictly a stopgap.
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Patience vs. Panic
History says teams don’t make panic trades in September. The NFL trade deadline isn’t until November 4, and big deals this early often mean massive overpays. For now, the 49ers will roll with their young group and see if they can survive.
The schedule gives them a small cushion. Jacksonville comes to Levi’s Stadium this weekend, and the 49ers should be fine at home. But the next two weeks are a gut check: a Thursday night in LA against the Rams, followed by a cross-country trip to Tampa to face the undefeated Buccaneers.
If the defense holds, patience will win out. If not, Trey Hendrickson might just be wearing red and gold by midseason.
Because there’s no replacing Nick Bosa. There’s only surviving without him.
