The Rams are bringing back Mark Clayton after the veteran receiver recovered sufficiently from knee surgery. A source told ESPN NFL Insider Adam Schefter that Clayton agreed to a one-year deal.

Former Patriots safety James Sanders and the Falcons agreed to terms on a one-year contract Tuesday, a source familiar with the deal told ESPN NFL Insider Adam Schefter. The Patriots released the six-year veteran, who was tied for second on the team with three interceptions last season. He was due to make a base salary of $2.8M in 2011.

The 49ers and Frank Gore have agreed to a three-year extension worth $21M, a source familiar with the deal told ESPN NFL Insider Adam Schefter. The contract contains $13.5M guaranteed, the source said.

The Titans have agreed to a contract with receiver Kevin Curtis. Tennessee announced the deal Friday with the eight-year veteran who played last season with Miami. Curtis has 253 catches for 3,297 yards and 20 touchdowns in 81 career games.

The Bills have reached an agreement with defensive lineman Kyle Williams on six-year, $39 million deal with $17 million guaranteed. Williams will become one of the NFL's top-paid defensive lineman, as the extension is similar to the five-year, $40 million deal Patriots defensive tackle Vince Wilfork reached in March 2010, according to a source.

Sources tell ESPN NFL Insider Adam Schefter that Terrelle Pryor has agreed to a four-year deal with the Raiders and is with the team now. Raiders senior executive John Herrera said Pryor had arrived in the Bay Area and was expected to sign a deal Thursday night.

The Colts have reached an agreement with veteran quarterback Kerry Collins. According to sources, the Colts don't expect Peyton Manning to be ready to start by Week 1 as he recovers from offseason neck surgery. The Colts had been talking to Collins, who had announced his retirement earlier this year, for several days before he agreed to a deal on Tuesday night.

The Ravens and offensive tackle Bryant McKinnie have agreed on a two-year deal, pending him passing a physical. The deal can be worth up to $7.5 million and includes a $1 million signing bonus, according to a source familiar with the deal. McKinnie was cut in training camp by the Vikings after he reported overweight.

The Browns have reached an agreement with Pro Bowl offensive tackle Joe Thomas on a seven-year, $84M extension with roughly $44M guaranteed, a league source told ESPN NFL Insider Adam Schefter.

The Panthers have signed center Ryan Kalil to a six-year contract worth $49 million, according to team and league sources. The deal makes Kalil the highest-paid center in the league. Kalil was scheduled to make $10.1 million in 2011 as the team's designated franchise player and signed a five-year extension through 2016 that was restructured to lower his salary-cap number this year, according to the sources.