ATLANTA — After nearly two weeks of public uproar, University of Mississippi officials said Thursday that they had ended negotiations about reversing the decision to oust the school’s chancellor, Daniel W. Jones, whose forceful stands for racial tolerance helped remake perceptions of the campus.

The close of the talks came after Dr. Jones rejected an offer from the board of trustees of the State Institutions of Higher Learning: remain chancellor until June 2017 and then retire, without his “performance or effectiveness up to that date” having an effect on whether he could receive another extension.

“I feel strongly, as do most of my advisers, that serving two years as a lame duck would make it difficult to recruit and retain key leaders and continue our momentum in private giving,” Dr. Jones said in an open letter to the university, known as Ole Miss. “More importantly, it is clear from the board’s position that the board would not support my leadership during any extension. For the university to thrive and succeed, the university needs a leader who has the support of its governing board, which I clearly do not enjoy.”

In a statement that spoke anew of their concerns about the chancellor’s oversight of the university’s medical center, the trustees said that they had engaged in “a good-faith effort regarding Dr. Jones’s continued service” and would “move forward with the search for a new chancellor.”