Raiders trade All-Pro defensive end Khalil Mack to Bears.

Since entering the league, Mack leads all players with 185 1/2 quarterback pressures.

The Chicago Bears have acquired star pass rusher Khalil Mack from the Raiders in a massive trade that sends two first-round draft picks to Oakland.

Mack held out for the entire offseason and preseason, seeking a new, long-term contract rather than play under the final year of his rookie deal that would have earned him $13.8 million. Raiders coach Jon Gruden, in his biggest move since returning to the sideline from the broadcast booth, accommodated the 27-year-old Mack on Saturday.

A person with direct knowledge of the trade told The Associated Press that Oakland will get firstround selections in 2019 and 2020, a sixth-rounder next year and a thirdrounder in 2020. Oakland also included its secondround selection in 2020. The person spoke on condition of anonymity because the trade had not been announced.

No details of a new contract were immediately available. ESPN first reported the trade.

The fifth overall selec- tion in the 2014 draft, Mack is a two-time AllPro and the 2016 NFL Defensive Player of the Year. Mack has played in every game for Oakland the past four seasons, with 231 primary tackles, 40 1-2 sacks, and nine forced fumbles.

Since entering the league, Mack leads all p l aye r s wi t h 18 5 1⁄

2 quarterback pressures and ranks second with 68 tackles for loss, according to SportRadar. He is one of the most versatile defenders in the NFL and joins a Bears team lacking in star power.

Rams defensive tackle Aaron Donald, the 2017 Defensive Player of the Year, signed a six-year, $135 million deal Friday, with $87 million guaranteed, that made him the highest-paid defensive player in league history.