https://www.mercurynews.com/2019/04/08/del-rio-has-his-say-on-raiders-trade-of-khalil-mack/

ALAMEDA — Former Raiders coach Jack Del Rio has kept his thoughts to himself regarding the 2018 trade of defensive end Khalil Mack.

Del Rio, who is still due two years on a three-year, $15 million contract extension that was signed before the 2017 season, appeared on the NFL Network’s “Up to the Minute” and conceded his former team got good value from the trade although it was tough for him to see Mack go.