The Chargers agreed to terms with three offensive linemen on one-year deals on Friday.
Chargers starting OLT Marcus McNeill has undergone arthroscopic surgery on his left knee and will be out two weeks.
The loss of DT John Henderson for at least a month has Oakland extremely concerned about the ability of its defense to stop the opponent's run game, according to AFC West Whispers.
The Chargers are missing a key piece of their offense with two-time Pro Bowl OLT Marcus McNeill continuing a holdout that likely will extend deep into the regular season.
According to our AFC Whispers, there has been no progress on a new contract between DRE Richard Seymour and the Raiders because the former Patriot doesn't want to return to the floundering franchise.