According to Ken Rosenthal, free agent starter Paul Byrd will sit out the first half of the season and then possibly join a contender. Byrd said he had "nice, competitive" offers to play all year but wants to spend more time with his family.
It’s uncertain whether Byrd will draw interest midseason, but I imagine he will. Remember how many teams were eyeing Freddy Garcia last year? The Braves, Rays, or Marlins woud be Byrd’s preference.