Cynthia Littleton Business EditorBobby Flay and Discovery’s Food Network have reached an agreement on a new three-year contract, a deal that comes about six weeks after negotiations stalled because the sides were too far apart on financial terms.The celebrity chef, restaurateur and author has set an exclusive pact that will keep him in the Discovery family through the middle of the decade and up to his 30th on-air anniversary with the cabler.