Tribune Media will withdraw from its $3.9 billion merger with Sinclair Broadcast Group, saying it would sue Sinclair for “breach of contract” over its failed negotiations with regulators over the deal. “In light of the FCC’s unanimous decision, referring the issue of Sinclair’s conduct for a hearing before an administrative law judge, our merger cannot be completed within an acceptable time frame, if ever,” said Peter Kern, Tribune’s chief executive officer. “This uncertainty and delay would be detrimental to our company and our shareholders.