La Liga president Javier Tebas has slammed a proposed Super League, claiming current planning is "clandestine" and that any such competition would quickly go bankrupt.
A Super League involving Europe's biggest clubs has been floated in recent years, with Real Madrid president Florentino Perez recently throwing his support behind such an idea.
Despite gaining support from some sections, concrete plans for the competition remain tight-lipped, with Tebas particularly skeptical about how a Super League would be funded.
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The Liga chief is also wary of the effect it would have for existing leagues, noting that both FIFA and UEFA would likely go to war to stop it.