The board is also expected to name an interim chancellor then.
But the interim chancellor will face several major challenges over the next few months.
Although the Mayor called for an interim chancellor, he did not suggest who would take the position.
She later served as interim chancellor and retired in 1996.
The board was planning to select an interim chancellor in a public vote this afternoon.
The interim chancellor is not eligible for the permanent post.
But now, the mayor will have to deal with an interim chancellor who was voted in by his political opponents.
He had been interim chancellor from 2003 until receiving the post on a permanent basis.
The trustees are hoping to name an interim chancellor at their meeting on Monday.
The Board has begun to study whether it will have to appoint an interim chancellor.