Tongsun Park's lawyer, Bill Hundley, had a call from his client in Seoul on Sunday night, assuring him that Park was "okay" and "not affected one way or the other" by the assassination of South Korean President Park Chung Hee.

Tongsun Park, the South Korean businessman who was the central figure in the "koreagate" scandals, is due back here in early November to challenge the Internatl Revenue Service's $4 million tax lein against everything he owned in the United States.

The State Department has not been that eager to have Park back in this country. He hasn't been here since he testified at the trial of Rep. Otto Passman in Louisiana last March.

There were reports from former friends and associates here that Park has been under virtual house arrest in Korea for the past few months. One former business partner, C. Wyatt Dickerson, said recently that the Korean government "won't let him out, and his tax lawyer, Sheldon Cohen, is going crazy."

Hundley said yesterday Park wasn't having trouble getting out of Korea, just getting into the United States."He's made at least one trip to London since the Passman trial," he said. "There's been foot-dragging, but we finally resolved it a week ago."

Under the agreement between the United States and South Korea, Park traveled here freely whenever his testimony was needed against others. The problem arose, Hundley said, when the State Department took the position that after he was no longer needed by prosecutors here, he should be treated "like any other Korean citizen" asking for a visa.

It was when he needed to come on his own business that he found the doors closed.

Park is asking a federal court to dismiss an IRS claim that has tied up his real estate and personal property since 1977.

Park will be here in November and again in January, Hundley said, unless some "new problem" arises because of the current upheaval.

Park could end up with a friend in power. One of the possible successors being mentioned in Seoul to replace Park Chung Hee is Tongsun Park's longtime mentor, former prime minister Chung Il Kwon.

The nicaraguan Embassy, that 3 1/2-acre estate at 3200 Ellicott St. where former Ambassador Sevilla-Sacasa resided for so many years as Dean of the Diplomatic Corps., has been sold for $2 million.

A spokesman at the embassy said yesterday a group of investors has signed a contract to purchase the property subject to rezoning. The purchasers do not want to be identified until the deal has become final, he said.

Billy Carter has a new manager, according to the people who are paying him $2,500 and expenses to come to Omaha for an alcohol abuse seminar.

Tandy Rice, the Tennessee entrepreneur who made President Carter's brother a star on the personal appearance circuit, hasn't represented him for months.

Billy's booking is being handled now by his longtime good ol' boy factotom in Plains, Randy Coleman.

Coleman and Billy have been in other business deals together. One is the "American Security Service" which, among other things, provides guard service for television networks that keep trailers in Plains.

Coleman, according to neighbors in Plains, named the company, "ASS," telling them he had selected "the initials because Plains in the a -- of America."