Getty Los Angeles Chargers edge rusher Joey Bosa at SoFi Stadium The San Francisco 49ers are looking to bolster their defensive line ahead of the 2025 season, aiming to strengthen the unit through free agency or the NFL Draft. With quarterback Brock Purdy poised to occupy a larger portion of the salary cap in the coming years, the 49ers are unlikely to be major spenders in free agency. Instead, they may target cost-effective acquisitions to remain competitive. Nick Bosa remains the cornerstone