Allen Park — The Detroit Lions made a trade Saturday morning, just not the one many fans wanted.

The Lions agreed to send offensive tackle Corey Robinson to the Carolina Panthers for an undisclosed draft pick, according to

A seventh-round draft pick in 2015, Robinson appeared in 23 games for Detroit over three seasons, including eight starts. This offseason, he had been effectively replaced by rookie Tyrell Crosby as the team’s swing backup.

Detroit's trade paled in comparison to the blockbuster pulled off by NFC North rival Chicago, which agreed to acquire two-time All-Pro linebacker Khalil Mack from the Oakland Raiders.

Mack, 27, appeared in all 64 games since being selected by the Raiders No. 5 overall in 2014, racking up 303 tackles, 40.5 sacks and nine forced fumbles during those four seasons.

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Entering the final year of his rookie deal, Mack opted to hold out this offseason in an effort to pressure the Raiders into an extension. According to multiple reports, the Raiders began seriously considering trade offers in recent days, with a number of franchises expressing interest.

To acquire Mack, the Bears traded away their first-round picks in 2019 and 2020, a third-round pick in 2020 and a sixth-round pick in 2019. With Mack the Bears received a second-round pick in 2020 and a conditional fifth-round pick, also in 2020.

Despite the topic dominating local sports talk radio, and Mack potentially filling the team’s biggest need, the Lions were never were serious contenders to meet the Raiders’ lofty asking price.

As part of the trade to Chicago, Mack reportedly agreed to a long-term extension that exceeded the massive six-year, $135 million pact signed by Los Angeles defensive lineman Aaron Donald on Friday. 

ESPN reported that Mack's extension was six years and $141 million, making him the NFL's highest-paid defensive player with a contract that averages $23.5 million annually.

Mack will join a Bears defense that finished seventh in sacks last year. Combined with former first-round pick Leonard Floyd, it gives the team a young, potent edge-rushing tandem.