Philadelphia Eagles quarterback Michael Vick agreed Monday to a restructured three-year contract, just two seasons after signing a $100 million extension that included $35.5 million in guaranteed money.The new deal is essentially for one year, however.A source familiar with the contract told The Associated Press that Vick could earn up to $10 million in 2013 if he meets all his performance incentives, and the team will void the remaining two years on March 15. That person spoke on condition of anonymity because the terms haven't been released.Vick was due to earn $16 million next season, including a $3 million roster bonus. He lost his starting job to rookie Nick Foles last season, but new coach Chip Kelly will give him a chance to win it back."I am grateful and proud to be a Philadelphia Eagle," Vick wrote on Twitter. "My heart is in Philly and this community is important to me."Vick had a breakout year in 2010, leading the Eagles to the NFC East title, winning the AP Comeback Player of the Year award and starting in the Pro Bowl. But he's battled injuries and inconsistency the last two years.Cowboys sign twoThe Dallas Cowboys signed guard Charlie Bryant of Memphis and defensive tackle Nick Hayden of Wisconsin to their reserve/future list. Hayden is a four-year NFL veteran.The Cowboys also confirmed the hiring of Gary Brown as running backs coach. Brown spent four years in the same role with the Cleveland Browns.Briefly Bills: Buffalo released two veterans in linebacker Nick Barnett and safety George Wilson as it reshapes its defense under new coach Doug Marrone. GM Buddy Nix said the team is freeing up spots to allow younger players to step into the roles. Giants: Defensive back Terrell Thomas, who has missed the last two seasons after twice tearing the ACL in his right knee, signed with New York. Thomas might switch to safety from cornerback. NFLPA: Executive director DeMaurice Smith says the union is still concerned about San Diego Chargers team doctor David Chao even though he reportedly has been cleared by an independent panel. Chiefs: Kansas City signed wide receiver Mardy Gilyard, tight end Kevin Brock and defensive end Marcus Dixon. The Chiefs were thin at receiver last year and could lose Dwayne Bowe to free agency. Dolphins: Miami-Dade County Mayor Carlos Gimenez said that even if voters approve a tax referendum to help upgrade Miami's stadium, county commissioners should insist on assurances from the NFL that the city will host the 50th Super Bowl in 2016.