FILE PHOTO: President of Bard College Leon Botstein speaks during the "Changing Landscapes: From the Digital Classroom to the Global Campus" panal during the TIME Summit On Higher Education on Oct. 18, 2012 in New York City. Jemal Countess | Getty Images Bard College President Leon Botstein announced Friday that he will retire at the end of June after 51 years leading the prestigious New York liberal arts school, a day after a law firm retained by its Board of Trustees delivered a critical report about his relationship with the late notorious sex offender Jeffrey Epstein . "Nothing that President Botstein did in connection with his relationship with Jeffrey Epstein was illegal," WilmerHale attorney Jamie Gorelick wrote in a summary to those trustees, which CNBC obtained. "But President Botstein made decisions in the course of that relationship that reflect on his leadership of Bard," wrote Gorelick, who served as a deputy attorney general in the Clinton administration .…