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Usain Bolt says he is "50/50" to compete at the London 2017 World Championships.

The 100m and 200m gold medallist spoke to Sonja McLaughlan shortly after a collision with a cameraman on wheeled transport.

Bolt confirmed that he will compete in Olympic Games in Rio De Janeiro – but said he is unsure about his future after that.

"I really want to run at London but I think the sport is not as fun as it used to be," said Bolt. "It's more taxing."

"I can't enjoy it as much as I want to because I have to be sacrificing a lot more so it's 50 / 50," he added.

This clip is originally from 5 live Afternoon Edition on August 27 2015.