How much evidence is enough evidence? Ali Curtis is an employee of the New York Red Bulls until whatever time he or the club says that is not the case, but RBNY's official stance - that the man appointed the team's sporting director in December, 2014, is still the team's sporting director - has surely lost any substantive credibility.
We used to know Ali Curtis was RBNY's SD because he was a near-daily part of the team's public activities. He was the voice of the club whenever there was hiring or firing to announce.