Once he broke his silence, Chip Kelly couldn't stop talking.

Kelly shot down months of speculation about the Eagles trading up to draft Heisman Trophy winner Marcus Mariota. He endorsed Sam Bradford as his starting quarterback and denied a power struggle with former general manager Howie Roseman that ended with Kelly in control of personnel decisions.

"I think Marcus is the best quarterback in the draft," Kelly said Wednesday of his former Oregon star. "We will never mortgage our future to go all the way up to go get somebody like that because we have too many other holes that we're going to take care of."

Of course, Kelly could be bluffing.

Adding Bradford and re-signing Mark Sanchez means the Eagles have invested nearly $17 million in two quarterbacks for 2015. Bradford was acquired Tuesday from the Rams for Nick Foles and two draft picks. Kelly said the 2010 No. 1 overall pick isn't trade bait and that he already has turned down a first-rounder for him.

"We didn't bring Sam here to be a [trade] chip," Kelly said. "I'm the only Chip here."

Bradford hasn't played since 2013 and twice had surgery on his left ACL. "We've done our due diligence, so we feel very confident as to where Sam is," Kelly said.

On Wednesday, the Eagles agreed on a three-year contract with former Chargers running back Ryan Mathews, according to two people familiar with the move.

Around the league

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The Colts signed wide receiver Andre Johnson to a three-year contract . . . Defensive tackle Ndamukong Suh signed a six-year, $114-million deal with the Dolphins, who also signed cornerback Brice McCain to a two-year, $5.5-million deal . . . Quarterback Brian Hoyer joined the Texans . . . The Packers re-signed tackle Bryan Bulaga.