The Los Angeles Rams and defensive tackle Aaron Donald have agreed to a six-year deal, the team announced.
The deal is worth $135 million, including $87 million guaranteed, a source told ESPN's Adam Schefter.
It's the richest defensive deal in NFL history and could keep Donald with the Rams for the next seven years.
A first-round pick in 2014, Donald was entering the final year of his rookie contract and was scheduled to earn $6.9 million.
Donald, a three-time All-Pro, four-time Pro Bowl selection and 2014 Defensive Rookie of the Year, has 39 career sacks and nine forced fumbles.