Miami Heat owner Micky Arison has revealed that he was "shocked and disappointed" to hear that LeBron James had decided to rejoin the Cleveland Cavaliers.

The four-time MVP confirmed his decision to move back to his hometown team earlier today, having opted out of his contract with the Heat earlier this off-season.

Arison wrote on Twitter: "I am shocked and disappointed in today's news. However I will never forget what LeBron brought us for four years. Thanks for memories @KingJames."

James began his NBA career with the Cavaliers before moving to Miami in 2010.