ENGLEWOOD, Colo. – Wes Welker is saying so long to Tom Brady and hello to Peyton Manning.

After spending six years with Brady in New England, the Pro Bowl receiver agreed to a two-year, $12 million deal Wednesday to team up with Manning in Denver.

The Welker signing was the highlight of a big day for the Broncos, who once again made a major splash in free agency.

Welker will hold an introductory news conference this afternoon.

Denver also came to terms on a two-year deal with defensive tackle Terrance Knighton, formerly of Jacksonville, and a one-year contract with linebacker Stewart Bradley, who played with the Cardinals the past two seasons.

Welker caught 118 passes for 1,354 yards and scored six touchdowns last year, helping the Pats go 12-4 and make the AFC title game before they also fell to Baltimore. He developed quite a rapport with Brady during his six seasons with the Patriots.

Bush to Lions

Reggie Bush has watched film of the Detroit Lions, and he has seen the opposing safeties playing deep and paying extra attention to Calvin Johnson.

“It’s a running back’s dream,” Bush said. “We have to be able to run the ball in that situation. One of the reasons I wanted to come here is to be able to bring a balanced attack.”

Bush was introduced Wednesday, part of a big day for the Lions, who also landed free agents Glover Quin and Jason Jones and retained Chris Houston.

Those moves should help the defense, and the Lions are hoping Bush can give a boost to an offense that already includes Johnson and quarterback Matthew Stafford.

The Lions did not disclose financial terms of Bush’s four-year contract, but it is reportedly worth around $16 million. Detroit also agreed to deals with Quin, a safety, Jones, a defensive end, and Houston, a cornerback.

Other moves

Kansas City remained busy by adding cornerback Dunta Robinson, late of the Falcons, to the three free agents it signed the previous day when the marketplace opened.

The Chiefs, who have the No. 1 pick in next month’s draft after a 2-14 season, agreed to deals with tight end Anthony Fasano, defensive tackle Mike DeVito, and quarterback Chase Daniel on Tuesday, when they also finalized the trade with San Francisco for starting QB Alex Smith.

Cleveland, another NFL also-ran, was just as active, agreeing to terms with linebacker Quentin Groves and tackle Desmond Bryant to further bolster a defense that added Ravens linebacker Paul Kruger hours after free agency began.

Baltimore signed defensive lineman Chris Canty, offensive lineman Ramon Harewood and running back Damien Berry.

In other moves:

•Chicago released tight end Kellen Davis after signing Martellus Bennett away from the Giants on Tuesday to replace him.

•The Giants signed 11-year veteran place kicker Josh Brown, who joins former Cowboys kicker David Buehler on the roster and apparently indicating free agent Lawrence Tynes won’t be back.

•Pittsburgh found its backup to QB Ben Roethlisberger in a Steel City native, Bruce Gradkowski. The 30-year-old Gradkowski is 6-14 as a starter with Oakland, Cleveland and Tampa Bay. He spent the 2011-12 seasons with the Cincinnati Bengals, appearing in five games.

•Jacksonville released receiver Laurent Robinson, the latest high-priced player let go as part of the team’s rebuilding project. Robinson signed a five-year, $32.5 million free agent-contract last season before missing considerable time with concussions.