Defensive end Khalil Mack and the Chicago Bears reached agreement on a six-year, $141-million deal Saturday that makes Mack the highest paid defensive player in the history of the NFL.
Chicago acquired Mack in a trade with the Oakland Raiders earlier Saturday.
The deal, according to NFL Network, includes $90 million guaranteed with $60 million guaranteed at signing. Mack will receive $155 million over seven years.
Details of the trade show the Bears are paying a heavy price for one of the pre-eminent pass rushers.
The Raiders will get first-round draft picks in 2019 and 2020, a third-rounder in 2020 and a sixth-rounder in 2019. In addition to Mack, Chicago is getting a 2020 second-round pick and a conditional 2020 fifth-round selection, according to NFL Network.
Mack was locked in a contract stalemate with the Raiders, refusing to report to training camp and the team's offseason workouts. He reportedly was demanding an extension that will include $65 million guaranteed.
Mack's new deal eclipses the record extension signed by Los Angeles Rams defensive tackle Aaron Donald on Friday.
Donald, the reigning NFL Defensive Player of the Year, and the Rams worked out a six-year, $135 million extension that made him the highest-paid defensive player in history.
That record lasted one day.
Mack, the 2016 NFL Defensive Player of the Year and a three-time Pro Bowl selection, is scheduled to make a base salary of $13,846,000 this season on the last year of his rookie contract.
Teammates of Mack appeared resigned to the trade in posts on social media Saturday morning.
"This is the sucky part of this business," Oakland quarterback Derek Carr wrote on Twitter. "Mornings like this, but we have a season to play and games to win!! #RaiderNation we feel your pain trust me but we need you next Monday night!"
Pass rusher Bruce Irvin reacted with an expletive before tweeting in a follow-up posting: "What a shock. Now move on and win. time to beat the Rams!!
Oakland opens the season against the Los Angeles Rams on Sept. 10.
The Raiders and Mack reportedly had not had talks for several months even though Oakland head coach Jon Gruden said in July that the stud defensive end's contract status was a top priority.
Mack broke his silence on Twitter on Thursday night, responding to a tweet from the Athletic by saying: "I miss it."
The 27-year-old Mack recorded 78 tackles and 10.5 sacks in 16 games last season, the third consecutive year he has registered double-digit sacks.
Mack has 303 tackles and 40.5 sacks in 64 career contests with Oakland. He established a career high with 15.0 sacks in 2015 and followed that up with 11.0 sacks, one interception and five forced fumbles the following season in earning the league's top defensive honor.
The Bears received permission to negotiate a long-term deal with Mack and discussions were underway Friday night, the NFL Network reported. Along with the two first-round picks, a player may be headed back to Oakland in the trade.
Mack would provide a huge upgrade to Chicago's defense. The Bears, who have a first-year coach in Matt Nagy, used their first-round pick (No. 8 overall) to take linebacker Roquan Smith.