THOUSAND OAKS, Calif. (AP) All-Pro defensive lineman Aaron Donald skipped the Los Angeles Rams' first day of organized team activities Monday while he negotiates a long-term contract extension with the club.

Rams general manager Les Snead said the team knew Donald wouldn't be at their training complex, and he isn't worried about a long-term absence for the anchor of Los Angeles' defense. Donald already is under contract through 2018.

"It has something to do with the contract," Snead said. "I can tell you this: We're definitely at the serious stages of renegotiating. Going to keep all the details in-house, but (we) respect Aaron as a player, a person. Respect his representation, and respect the process."