Aon calls off $24 bln Willis Tower bid

Aon Plc is considering combining with rival insurance broker Willis Towers Watson Plc, Bloomberg reported. The companies have held preliminary talks and Aon is expected to submit an offer in coming weeks, the story said. An offer for Aon could exceed $24 billion. UPDATE: Aon said March 6 that it considered investing in Willis Tower but no longer plans to pursue this business combination.