​While Odell Beckham Jr. reported to team activities throughout the offseason and received his lucrative deal in the process, the same can not be said about defensive end Khalil Mack.

The 2014 first-round pick is entering the final year of his rookie contract, and is looking to get a monster deal. For him and the Oakland Raiders, however, no progress has been made. As a result, ​Mack's holdout could now extend into the regular season.

Oakland has listened to some trade offers for the defensive end, ​but turned them all down. And all of it stems from the Raiders' asking price.

One anonymous NFL Director of Player Personnel was asked about the thought of potentially acquiring Mack in a trade. The executive said the price was "too rich" and would have to send "two picks in the top 40" to have him for a season and ultimately convince him to sign an extension.

Mack has proven throughout his short career that he is simply unstoppable. In four seasons, Mack has recorded 231 total tackles, 40.5 sacks, and nine forced fumbles, while making three Pro Bowls, and winning the 2016 NFL Defensive Player of the Year award.

What doesn't help Oakland's case is the 2019 draft class features a bevy of top pass rushing prospects, including Nick Bosa of Ohio State.

Mack is likely looking for a Von Miller type deal, which has an annual salary of $19 million, with his asking price being around $20 million per year. Teams could choose to save money and draft young players, instead of throwing a hefty contract at one player.

From the sounds of it, don't expect any team to trade for Khalil Mack.