Here's the article, it's definitely written sympathetically but I leaned into believing his version.They reduced his ban from 12 to 9 months. It sounds as though they still doubt him to me.
André Onana on the error that led to a nine-month ban: ‘40mg can destroy a career’
The Ajax and Cameroon goalkeeper on the mistake that led to a doping suspension and took his career to the edge of collapse
www.theguardian.com
That’s Onana’s version, and it is one Uefa accepted. They concluded there had been no attempt to cheat but banned him anyway, beginning in February this year. “I’m just a number,” he says. “They can’t deal case by case. I think they should but there are rules and the rules are the rules. The doctors said [Furosemide] is for water-retention and doesn’t benefit you.