Paul Sullivan, Cubs beat writer at the Chicago Tribune, has the story:
On Wednesday it was revealed Castro had $3.6 million from his bank accounts in the Dominican Republic frozen over a contract his father signed when he was 16, agreeing to give 3 percent of his major league earnings to persons involved with a baseball school in the Dominican.
Castro’s agent and attorney believe the contract will be nullified in a Dominican court when all is said and done, and Castro will get to keep his money. The Cubs have remained mum, monitoring the situation from afar.
Castro has known about this issue for over a year and his countersuit claims that it had “direct impact on his duties as a professional ballplayer, leading to one of his worst-ever statistical performances.”
Castro did indeed struggle in 2013, batting just .245/.284/.347 in 705 plate appearances.