With serious allegations of corruption and bribery linked to Japanese Olympic Committee chief Tsunekazu Takeda, a prominent member of the global sports community issued a call for Japanese authorities to sever ties with him.

Ollan Cassell believes a leadership change is needed now instead of having a dark cloud of suspicion hanging over the 2020 Tokyo Games.

"It seems to be it would be best for the Japanese to find a method to sit him aside rather than embarrass him in front of the Japanese people," Cassell, who won a gold medal in the men's 4x400-meter track relay at the 1964 Tokyo Olympics, told The Japan Times on Friday.