With Jon Gruden and Mark Davis leading the charge to trade Khalil Mack — Reggie McKenzie‘s premier draft choice — it could signal a separation of the Raiders‘ power structure soon. Davis gave Gruden power via the 10-year, $100MM contract, but McKenzie’s remained in his GM role. That could change soon, with Jason La Canfora of CBS Sports expecting the Raiders to part ways with McKenzie and bring in one or two younger evaluators to work under Gruden as the franchise transitions to Las Vegas. Some around the league didn’t expect Gruden and McKenzie to coexist for long, and the Raiders making one of modern NFL history’s biggest trades could further drive the decision-makers apart. Gruden has also expressed doubt about McKenzie’s recent draft classes, and the transactions involving those players signal the new coach’s dissatisfaction with the classes.

Here’s the latest from the West divisions:

• Mack’s contract sets up Joey Bosa as the player best-positioned to eclipse it, Joel Corry of CBS Sports said (via Tom Krasovic of the San Diego Union-Tribune). Bosa’s floor will be Mack’s $23.5MM-AAV Bears deal, per Corry, who adds he wouldn’t be surprised to see the Chargers‘ young pass rusher sign for $25MM per year and shoot for $100MM guaranteed. The Chargers have Bosa under team control through 2020 via the fifth-year option, and as teams showed with the 2014 first-round crop, procuring an extension with two years left on a rookie contract is difficult. Todd Gurley provided a recent exception, however. Bosa, 23, becomes extension-eligible after this season and will be much younger than Mack or Donald was when they became eligible. The Bolts also have Philip Rivers signed through 2019, and the veteran quarterback has not indicated he’s considering near-future retirement. So, the Chargers might have to build for the prospect of having two $20MM-per-year players on a payroll. No team’s cap sheet currently features that.
• Shaquem Griffin will make a Week 1 start. The inspirational Seahawks fifth-round rookie will start in place of K.J. Wright against the Broncos this week, Pete Carroll said. Wright underwent recent knee surgery and has a best-case scenario of being ready by Week 2.
• Despite being away from the Chiefs all offseason, Ron Parker has multiple avenues back into the starting lineup in time for Week 1. Eric Berry is questionable to face the Bolts with a heel injury, and Andy Reid said Berry’s longtime wingman could start regardless of the All-Pro’s status (Twitter link via the Kansas City Star’s Brooke Pryor). Parker’s started all but one Chiefs game for the past four seasons but was released in March for cap concerns. He’s now back for the league minimum, per OverTheCap. The Chiefs lost projected starter Daniel Sorensen to an August injury; he’s currently on IR.