FOXBOROUGH, Mass. (AP) — Tight end Rob Gronkowski has been cleared to play by the New England Patriots. Coach Bill Belichick (BEHL'-ih-chik) says the veteran has been cleared after offseason knee surgery. Gronkowski missed the last three regular-season games and both playoff games after suffering a torn anterior cruciate ligament in his right knee when he was hit in a game with Cleveland. He underwent surgery in January.

In other NFL news:

— On the eve of training camp, the Atlanta Falcons have agreed to terms on a new contract with receiver Roddy White. The Falcons announced the four-year extension Thursday. Terms haven't been released.

— Pro Bowl running back Jamaal Charles has reached a two-year contract extension with the Kansas City Chiefs. A person familiar with the contract said the deal will keep Charles in Kansas City through the 2017 season.

— The Browns have signed rookie cornerback Justin Gilbert, one of their first-round draft picks, to a four-year, $12.8 million contract. Cleveland selected Gilbert with the No. 8 overall pick. He's expected to start on the opposite side from Pro Bowl cornerback Joe Haden.

— Seattle Seahawks wide receiver Sidney Rice is retiring from the NFL after an injury-plagued career that included issues with concussions. Rice missed half of last season with the Seahawks after tearing his ACL against St. Louis.

— Philadelphia Eagles offensive tackle Lane Johnson has been suspended for the first four games of the season for violating the NFL's performance-enhancing drugs policy.