The Houston Texans have traded for Ryan Mallett from the New England Patriots, sending a conditional sixth or seventh round pick in 2015.

The Texans are entering the 2014 season with Ryan Fitzpatrick as their starter.

To make room for Mallett on their roster, the Texans will waive quarterback Case Keenum, a source told ESPN.

Mallett was passed on the Patriots' depth chart this summer by rookie Jimmy Garoppolo, a second-round pick who impressed throughout training camp and the preseason.

Adrian Peterson told Jerry Jones that he would like to play for the Dallas Cowboys at the end of his tenure with the Minnesota Vikings, according to an "Outside the Lines" report.

"Well, I understand, Adrian," Jones told Peterson during the call. "I'd like that, too ... Well, I love your story. I love your daddy's story. I've always respected what you've been about. I've always been a fan of yours."

The telephone call is recounted as part of an expansive "Outside the Lines"/ESPN The Magazine profile of Jones by ESPN senior writer Don Van Natta Jr. that was published Thursday.

As for the Peterson call, Van Natta was in Jones' suite at AT&T Stadium when a friend of Jones' handed the phone to him. Peterson had talked first to a Morgan Stanley money manager who had attended George Strait's final concert on June 7 at AT&T Stadium. After the concert, Jones and several others remained in the suite; Peterson talked with the man, who handed the phone to Jones without saying who was on the line.

"Well, we'll see what we can do, if we can make that happen," Jones, who is also the Cowboys' general manager, told Peterson. "Hmm hmm ... I'd like that, too ... Well, we're talking pig Latin here, but let's see if we can do that ... We're talking pig Latin here, but let's see what we can do about that. OK, Adrian, thanks."

The New England Patriots have traded Logan Mankins to the Tampa Bay Buccaneers for a draft pick and Tim Wright.

Mankins is a six-time Pro Bowler at guard.

Mankins will count $4 million against the Patriots' salary cap in 2014 and another $4 million in 2015.

The Buccaneers have been searching for an upgrade at left guard.

Mark Sanchez has been linked to a trade ot the St. Louis Rams following the season-ending injury to Sam Bradford, but he reportedly wants to remain with the Philadelphia Eagles.

Sanchez would have a chance to start and play in Brian Schottenheimer's offense if he were to go to the Rams.

Sanchez believes he has a chance to remake his career at the age of 27 with Chip Kelly and has played well in the preseason.

Shaun Hill will enter 2014 as the Rams' starter.

Doug Whaley denied speculation that the Buffalo Bills have received trade offers for C.J. Spiller.

"We have not been contacted by any team about C.J. Spiller," Whaley said, per the team's official website. "These rumors are news to me. It's exciting, I guess, to you guys because it gives you something to fill the newspaper with."

There were reports that Chip Kelly called the Bills in March on Spiller two months before the club tried to trade up for Carlos Hyde.

The New England Patriots have traded for Jerel Worthy from the Green Bay Packers in exchange for a late-round draft pick.

Worthy missed all but 14 snaps last season because he was slow to recover from a late 2012 ACL tear. He entered training camp on the roster bubble due to an influx of talent on the defensive side of the ball in Green Bay.

A poor fit for Dom Capers' two-gap scheme, Worthy managed just 2.5 sacks in a part-time role as a rookie.

The Dallas Cowboys have acquired defensive back Justin Green from the New England Patriots for Ben Bass.

The Cowboys needed depth at corner back following the suspension to Orlando Scandrick.

Green, who began his college career as a running back at Illinois before being switched to corner, spent most of last season on the Patriots practice squad.

With Alex Boone continuing to hold out, multiple teams are preparing to approach the San Francisco 49ers about a trade for the guard.

Boone signed a five-year deal in 2011 when he was a backup and the contract was essentially for backup money. Boone has since developed into one of the better guards in the NFL.

The Tampa Bay Buccaneers and New York Giants are among the teams that can use a guard.

Joe Looney is working with the first unit in Boone's place and the 49ers would prefer to get a deal done.