BASEBALL: Heyman: Cubs informing teams that Castro is unavailable

http://www.cbssports.com/mlb/writer/jon-heyman/24872984/cubs-telling-teams-that-shortstop-starlin-castro-isnt-going-anywhere via /r/baseball http://www.reddit.com/r/baseball/comments/2ol2cy/heyman_cubs_informing_teams_that_castro_is/