Justin Fashanu came out in 1990, claiming he had had an affair with a Conservative MP, but lived a troubled existence before committing suicide in 1998.
Brother John, whose relationship with Justin was difficult, told talkSPORT: "I don't believe he was gay. Number two, I don't believe he had affairs with MPs...it was just nonsense. Showbiz."
He added: "If you had a brother who came out and said, 'Hey listen, I'm gay' we'd welcome you, say 'No problem' but if you had someone who came out and said, 'I'm a spaceman' when you're not a spaceman then that's a bit silly."
He continued: "I'm not someone who says, 'I've got black friends, they're all good people'. I'm not going to say 'I've got gay friends, who are all good people'.
"It's unfortunate because I don't believe he was, and if he was, who gives a rat's a**e? So what?
"But don't go and sell your stories or make up stories for money for goodness sake. I'm heterosexual, will I make it on to the front page of the newspapers?"
Earlier this year, John's daughter Amal presented a documentary about her uncle and the wider issue of homosexuality in football.
John said: "My daughter was very close to her uncle and it has taken a long time for her to understand that Justin wasn't really gay, he just wanted attention."
Source: PA
