The three confederations – representing Europe, North America, Central America and the Caribbean, and Asia – criticised a statement released by Fifa after Infantino called management board members to a meeting in Rabat, Morocco last Wednesday.
The confederations cited Infantino shutting out FIFA council members and member associations from the meeting, instead summoning only Fifa-employed senior staff.
The open letter added that Fifa’s admission of mistakes made in the FFE process did not go far enough.
“It did not acknowledge that the proposal itself was inherently wrong,” the letter stated. “There remains no recognition that attempting to sell an interest in the Fifa World Cup was a profound failure of judgement.
“Not just a procedural misstep, but a fundamental breach of trust with the very institutions Fifa exists to serve.”
Fifa has committed to presenting a report to the next meeting of the Fifa council, which is expected to take place in October.
But the three confederations said this failed to “recognise that proper governance in the face of such a profound lack of judgement would require that such a review be conducted by a fully independent third party”.
The letter underlined a legal warning made by Uefa that Fifa should not delete or destroy any documents related to the plans.