Here is the latest NFL buzz around the Twitter-sphere on Tuesday:
• The Saints have traded All-Pro tight end Jimmy Graham and fourth-round pick to the Seahawks for center Max Unger and first-round pick, per FOX Sports' Jay Glazer.
UPDATE: Graham has officially been traded to the Seahawks.
• The Patriots have exercised their option on cornerback, making him a free agent per FOX Sports 1's Mike Garafalo.
• Free-agent cornerback Tramon Williams is set to visit the Saints per ESPN's Adam Schefter.
• The Ravens have traded defensive lineman Haloti Ngata to the Lions for a fourth- and fifth-round pick, per the Baltimore Sun's Aaron Wilson.
• Free-agent receiver Percy Harvin is set to visit the Bills per FOXSports.com's Ross Jones.
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• Free-agent cornerback Perrish Cox is set to visit the Redskins per NFL Network's Ian Rapoport
• Former Giants safety Antrel Rolle was reportedly signing with the Bears, but the report has been refuted and his agent Drew Rosenhaus says it is just a visit per Schefter.
• Former Cardinals cornerback Antonio Cromartie said on an appearance on ESPN that he can be the "one piece" that helps the Cowboys "win a championship." He is choosing between the Cowboys or a reunion with either the Jets or Cardinals, per ESPN's Stephen A. Smith.
• Former Patriots running back Shane Vereen has agreed to a deal with the Giants, per Garafalo.
• Former Raiders safety Tyvon Branch has agreed to a deal with the Chiefs, per Rapoport.
• Former Texans receiver Andre Johnson was on a plane with Frank Gore as the pair is expected to sign with the Colts, per NFL.com's Lance Zerlein.
UPDATE: Gore has been officially signed by the Colts.
• Former Falcons receiver Harry Douglas has agreed to a deal with the Titans, per Schefter.
• The Chiefs are expected to release receiver Dwayne Bowe, per Rapoport.
• Former Bills safety Da'Norris Searcy has agreed to a deal with the Tennessee Titans, per the Tennessean's Jim Wyatt.
• Former Packers cornerback Davon House has agreed to a deal with the Jaguars, per Rapoport.
• Cornerback Darrelle Revis has agreed to terms to return to the New York Jets. His agents announced the move on Twitter.