First, I doubt he’d agree to see them.
Second, even if he did see them, he wouldn’t listen.
Nixon was paranoid but he was still a patriot. He knew what an impeachment conviction would do to the country and when the result became obvious, he left peacefully.
He did much the same thing by not contesting the 1960 election too much. He also was called upon by Presidents of both parties for his sage advice on foreign policy for the remainder of his life.
Trump will not be invited to the ex-Presidents fraternity keggers.