In March, Williams, who was about to become a free agent, agreed to a new five-year contract with the 49ers. That contract was believed to pay Willians between $5 and $6 million per year. However, when his availability for the 49ers' season opener in September came into question, that contract was replaced by a one-year deal.
Following a physical, it was determined that Williams' rehab from surgery on his left leg would require more time that originally believed. The base salary on his new deal is $1 million with bonuses that bring the cap hit for the 49ers to $4 million. The contract allows the 49ers to evaluate Williams for another season, but will once again make him a free agent in 2017. Prior to the extent of the injury becoming better known, Williams was considered one of the top interior defender free agents.
Williams missed 21 of 32 games from in 2013 and 2014 because of a leg fracture in each of the two seasons. He became a starter in 2014, but the fractured leg ended his season after nine games. He started all 16 games for the 49ers in 2015 and underwent a follow-up procedure upon completion of the season.
"The 18th-highest-graded interior defender (85.6) in the league last season, Williams was a bright spot in an otherwise down year for the 49ers," explains Eric Eager of Pro Football Focus. "Having played just 271 snaps in his first four seasons, Williams emerged as a dominant force against the run, finishing last season with the ninth-highest run-stop percentage (10.6) among defensive tackles (tied with Linval Joseph). He finished the year particularly strong; his run defense grade over the last six weeks of the season was third among defensive tackles, with his overall grade being fourth. He added a respectable 19 pressures as a pass-rusher, as well."
While he did have an 85.9 overall grade last season according to Pro Football Focus, Williams had a slightly higher 89.0 run-defense grade, which ranked 11th-highest among interior defenders, and was in on 379 running snaps versus 298 passing snaps.
Williams' $4 million cap hit ranks 19th among defensive tackles and is in the same range as Lions DT Haloti Ngata and Jaguars NT Roy Miller. That number also ranks seventh on the 49ers.
Williams joined the 49ers as an undrafted free agent out of Notre Dame in 2011.
Ian Williams' contract at a glance
Signed through: 2016
Base salary: $1 million
Cap hit per year: $4 million
* Cap numbers from Spotrac.com
More San Francisco 49ers News
-
49ers bolster interior O-line in 2026 NFL mock draft
CBS Sports analyst Mike Renner released his latest 2026 NFL mock draft, projecting the San Francisco 49ers to address a clear roster need: the interior offensive line. While many expected the 49ers to invest early in the offensive line during the 2025 NFL Draft, the unit... -
49ers QB Brock Purdy surprises O-line with custom Rolex watches for Christmas
San Francisco 49ers quarterback Brock Purdy is putting his new contract to good use. After signing a five-year, $265 million NFL contract extension this offseason, Purdy once again treated the teammates who protect him in the trenches—his offensive line. Last year, Purdy... -
Key stats from the 49ers' 48-27 Week 16 win vs. the Colts
The San Francisco 49ers improved to 11-4 on the season after a 48-27 Week 16 win over the Indianapolis Colts at Lucas Oil Stadium in Indianapolis, Indiana. Below are several statistics and notes from Monday's game, which were provided by the 49ers Communications staff. With... -
49ers' Trent Williams on NFL future: 'I'm nowhere near done'
San Francisco 49ers left tackle Trent Williams is not contemplating retirement anytime soon. Despite being 37 years old, Williams continues to perform at an elite level and believes he still has plenty of football left in him. Williams has earned a Pro Football Focus grade...