UK Anti-Doping (Ukad) fears it could be made insolvent or require a government bailout over a dispute with Tyson Fury. Former world heavyweight champion Fury tested positive for a banned steroid in June 2016, and says the adverse result came from eating uncastrated wild boar.
But a legal battle with Ukad over the evidence has meant Fury, 29, has not fought for two years.
Now senior figures at the agency are worried if he were cleared, Fury could sue for loss of earnings.
Given he reportedly makes up to £5m a fight before other revenue streams are factored in, any potential payout would severely challenge Ukad with its annual budget of around £8m.