The NFL Players Association has formally filed a grievance against the league challenging the NFL’s new personal conduct policy, which was adopted in December despite the NFLPA’s objections, according to Adam Schefter of ESPN.com. The union contends that it didn’t have an opportunity to collectively bargain many key points of the new policy, arguing that the policy violates the CBA and that it was adopted “without the consent, and over the objections, of the NFLPA.”

While we wait to see what comes of the union’s grievance, let’s round up several items from across the NFL….

• Injured Patriots linebacker Jerod Mayo has been prioritizing his rehabilitation after a season-ending knee injury, and fully intends to get back on the field in 2015, but he has also developed an interest in coaching during his time spent on injured reserve, writes Jeff Howe of the Boston Herald. “I’m just trying to learn as much as I can,” Mayo said. “If I do choose to go down that road, hopefully I can apply some of these principles that I’ve learned from coach [Bill] Belichick in my coaching career.”
• While a previous report revealed the Packers turned down the Rams’ request to speak to Alex Van Pelt about their offensive coordinator job, St. Louis wasn’t the only team rebuffed by Green Bay. According to Jason La Canfora of CBSSports.com (via Twitter), the Jaguars and Bears were also denied permission to interview Van Pelt.
• The Raiders have officially confirmed a handful of new additions to Jack Del Rio’s staff, announcing in a press release that they’ve hired Todd Downing (QB coach), Marcus Robertson (DB coach), Sal Sunseri (LB coach), and Mike Tice (OL coach).
• The Jets also announced several new assistants in addition to their new coordinators. According to the team, Mike Caldwell (assistant HC/ILB coach), Mark Collins (OLB coach), Joe Danna (DB/S coach), and Karl Dorrell (WR coach) are among the new arrivals.
• Dolphins general manager Dennis Hickey isn’t phased by the fact that 2015 could be a make-or-break season for him and head coach Joe Philbin, suggesting that he approaches every season as if it’s make-or-break, writes Armando Salguero of the Miami Herald.
• The Texans have made some front office changes, promoting Jon Carr to director of college scouting and hiring Matt Jansen to the new position of college scouting coordinator, per John McClain of the Houston Chronicle (Twitter links).
• We learned yesterday that Kansas State wide receiver Tyler Lockett met with the Dolphins at the Senior Bowl, but Miami is far from the only team to interview Lockett. The wideout, who is generating plenty of buzz in Mobile, tells James Walker of ESPN.com (Twitter link) that he spoke to 28 NFL teams this week.