HENDERSON, Nev. (AP) — Josh Jacobs of the Las Vegas Raiders, who led the NFL in rushing last season, failed to reach an agreement on a long-term extension by Monday's deadline, according to someone with knowledge of the situation.

The person spoke on condition of anonymity because they were not authorized to speak publicly on the matter.

The failure of the two sides to reach a deal could prompt Jacob to sit out training camp and perhaps even this season. Jacobs doesn't have anything to lose financially by missing camp, but he would be forfeiting paychecks by not playing games.

Multiple attempts to reach his agent, Chad Wiestling, were unsuccessful.

The Raiders placed the franchise tag on Jacobs on March 6, which means he would play on a $10.1 million deal this season if he returns to the team. The veterans report July 25, and training camp opens the following day.

Jacobs has been clear about his position all along, even saying at one point he would be a “hero turned villain” if forced to play under the tag.

He is the latest example of the changing climate for running backs, who have gone from a prominent position of being able to help lead teams to Super Bowls to an expendable spot where workhorse backs are less valued.

Though Jacobs led the league with 1,653 yards rushing, the Raiders went 6-11 last season.

Jacobs' expected absence adds another element of uncertainty to Las Vegas. Quarterback Jimmy Garoppolo and defensive end and first-round draft pick Tyree Wilson didn't participate in organized team activities because of foot injuries.

___

AP NFL: https://apnews.com/hub/nfl and https://twitter.com/AP_NFL