Haynesworth is unhappy with the prospect of playing nose tackle in the team's new 3-4 defense. He also has chosen to do his offseason conditioning workouts away from Redskins Park, a move that displeased Shanahan.
The Redskins have explored trades with several teams for Haynesworth. If they're going to make a deal, they would like to have it in place before next week's draft.
The same goes for Campbell, who was pushed down the quarterbacks depth chart when the Redskins traded for Donovan McNabb earlier this month. Shanahan has said he would welcome Campbell back, but the quarterback wants to find a team that would give him a genuine chance to compete for a starting job.
Also absent from the three-day minicamp is linebacker Rocky McIntosh, who's unhappy about his contract situation. McIntosh indicated to The Washington Post that he also might be on the trading block.
Attendance at the minicamp is voluntary under NFL rules. The Redskins are allowed three minicamps this offseason instead of one because they have a new coach, but only the one held in June will be mandatory.
But no neutral parties were allowed to witness the start of the new era. Shanahan decreed the practice and the players to be off-limits to reporters, which he is allowed to do because the minicamp is considered voluntary. Reporters will be allowed to watch the final practice Sunday.
Notes: The Redskins announced Friday that late safety Sean Taylor's locker will be moved from the team's training facility to FedEx Field, where it will be on public display. Taylor was shot to death at his home in Miami in November 2007. Shortly afterward, the Redskins sealed Taylor's locker behind Plexiglas, with his helmet, jersey, shoulder pads and other belongings inside. ... Veteran DL Kedric Golstonre-signed with the Redskins, but terms of the deal weren't disclosed.
The Associated Press contributed to this report.