Oakland Raiders pass rusher Khalil Mack was absent from the start of voluntary workouts under new head coach Jon Gruden. Money appears to be at the heart of the matter as Mack is seeking a long-term contract extension.

The 2016 NFL Defensive Player of the Year and two-time first-team All-Pro is looking to get paid like the game's top defensive player and wants a contract that guarantees $65 million, reported NFL Network's Steve Wyche.

Denver linebacker Von Miller received $70 million in guarantees in the six-year contract he signed in 2016, while the Los Angeles Rams' Aaron Donald figures to top that number when he inks a new deal. Rams general manager Les Snead hinted this week the two sides are "on the verge" of a massive deal.