SANTA CLARA, Calif. — A person with knowledge of the negotiations said Randy Moss is back in the NFL with the San Francisco 49ers.

ESPN first reported the move.

Moss agreed to a one-year deal Monday with the reigning NFC West champions, according to a person who spoke to The Associated Press on condition of anonymity.

Moss, 35, worked out with the 49ers earlier in the day with former NFL quarterback and Coach Jim Harbaugh participating.

Moss, who worked out last Tuesday with the New Orleans Saints, spent a year out of football and last played for New England, Minnesota and Tennessee during a rocky 2010 season.

He will help fill a big void in a depleted receiving corps.

FREE AGENCY: The NFL’s calendar turns toward a new season today when free agency begins.

Four-time MVP Peyton Manning is, of course, the top free agent after he was released last week by Indianapolis. So far he’s met only with the Broncos and Cardinals.

Manning did not show at the Dolphins’ headquarters Monday despite speculation he would meet with the team.

A person familiar with the situation said the Titans will be visiting with Manning, too.

Titans owner Bud Adams made it known Sunday he will do whatever it takes to sign Manning to get back to the playoffs and win his team’s first Super Bowl. Adams told The Tennessean he had talked to Manning’s agent, Tom Condon, asking for a visit with the quarterback.

While Manning is pursued, many other game-changers such as Ray Rice, Wes Welker, Matt Forte and DeSean Jackson were given franchise tags and will require compensation if they switch teams.

Still, there are dozens of enticing options, from Mario Williams to Mario Manningham, from Vincent Jackson to Matt Flynn.

Several teams will let players walk to clear salary-cap space. On Monday, the Redskins released safety Oshiomogho Atogwe, who signed a five-year, $26 million contract just before the NFL lockout began last March. They also cut veteran fullback Mike Sellers.

A few teams were busy placing tenders on restricted free agents to avoid losing them without compensation. The Steelers did so with Pro Bowl receiver Mike Wallace and five others.

The Bills did the same with offensive linemen Chad Rinehart and Kraig Urbik. San Francisco tendered cornerback Tramaine Brock and linebacker Larry Grant.

Cincinnati re-signed four potential free agents: fullback Chris Pressley, running back Cedric Peerman, linebacker Vincent Rey and defensive tackle Nick Hayden.

The Jets and nose tackle Sione Pouha agreed to a three-year deal Monday.

BEARS: Chicago tendered a qualifying offer to restricted free agent running back Kahlil Bell.

JAGUARS: Jacksonville signed offensive tackle William Robinson, keeping him off the free-agent market.

SAINTS: New Orleans agreed to terms on a one-year contract with backup quarterback and place-holder Chase Daniel.

Daniel, a former Heisman trophy finalist with Missouri, has been with the Saints since 2009 and has been Drew Brees’ backup since 2010.

• Owner Tom Benson and Coach Sean Payton have met with NFL Commissioner Roger Goodell, who will decide the team’s punishment for its bounty program from 2009-11.

SALARY CAP: Two people familiar with the decision told The Associated Press that the Cowboys and Redskins will lose salary-cap space over the next two seasons because they paid exorbitant amounts two years ago to get more spending room for the upcoming season.

ESPN reported that the Redskins will lose $36 million in space, and the Cowboys will forfeit $10 million. This year’s salary cap is $120.6 million, up only $250,000 over last year.

CHIEFS: Kansas City re-signed defensive lineman Amon Gordon, a 30-year-old veteran who played in all 16 games last season.

VIKINGS: Backup quarterback Sage Rosenfels and Minnesota agreed in principle to a two-year contract.

LIONS: Wide receiver Nate Burleson said that he restructured his contract to help the team keep some of its pivotal players.

RAIDERS: Oakland plans to release tight end Kevin Boss just one year into a four-year contract.