Report: 49ers agree to 5-year deal to retain nose tackle Ian Williams

SAN FRANCISCO, CA - AUGUST 8: Ian Williams #93 of the San Francisco 49ers stands on the sideline prior to the game against the Denver Broncos at Candlestick Park on August 8, 2013 in San Francisco, California. The Broncos defeated the 49ers 10-6. (Photo by Michael Zagaris/San Francisco 49ers/Getty Images) *** Local Caption *** Ian Williams

The return of nose tackle Ian Williams was one of the few bright spots in a dismal 2015 season for the San Francisco 49ers.

Now, he'll be a highlight of their offseason, too, agreeing to a five-year deal to stay in the Bay Area, according to multiple reports.

Williams, 26, joined the team as an undrafted free agent in 2011, after a standout career at Notre Dame.

He played sparingly his first two years with the team but became a starter in 2013, only to see his season end early because of a broken ankle. In 2014, he started nine games before suffering a broken leg.

But Williams, who was tabbed as one of the team captains, started all 16 games in 2015 and finished with 65 tackles and a sack.