Tarell Brown has been an above average starter for the 49ers in each of the past 3 seasons, grading out above average on Pro Football Focus in each of the last 3 seasons, maxing out at 13th overall in 2012, including 4th in pure coverage grade. However, the worst of his 3 seasons as a starter was this season as he “only” graded out 32nd and missed 3 games with a rib injury that limited him upon his return. As a result, the cap strapped 49ers only offered him 10 million over 3 years.
Apparently the rest of his market wasn’t much better as he decided it would be best for him to take a one-year deal to rehab his value and give free agency another shot, even if it was for only 3.5 million and even if it was with a terrible team like the Raiders. The Raiders are obviously the beneficiary. Normally bad teams have to pay a premium to get players to sign with them, but they were able to get an above average starter at a position of need at a very cheap rate.