The 28-year-old six-time Olympic gold medallist also says that he will just focus on the 100m in 2017.

Bolt had suggested that the Rio Games in 2016 would be his last major championship but he now appears to have changed his mind to make a return to London.

"That was the initial plan [to sign off after Rio]," he told the Daily Mail.

"But my sponsor has asked me to go on for another year; to 2017 and London.