SEOUL, South Korea (AP) _ NBC and the Seoul Olympic Organizing Committee are expected next month to sign the official contract for rights to televise the 1988 Summer Olympic Games.

Dong-A Ilbo, a leading Seoul newspaper, reported today that Lee Ha-woo, the committee's secretary general, disclosed plans to sign with the network in February. The contract was initialed on Oct. 3 in New York.

Lee said discussions concerning the language and legal terms of the contract had been concluded, the paper reported. Olympic organizers have been troubled by a money shortage, partly because of the delayed signing of the contract.

Protracted negotiations were held in Lausanne, Switzerland, over some details on the contract, which would guarantee a minimum of $300 million for South Korea. Compensation sought by NBC in case the Olympics are aborted has been a major concern.

NBC was said to have maintained that Seoul should pay back all contract money and other costs involved in purchasing broadcast facilities and producing Olympic programs. Seoul has insisted that only the contract money and no other expenses incurred by the American network be paid back.

There have been reports that some differences also remain over the times of holding some events during the Seoul Games.

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SEOUL, South Korea (AP) - The Seoul Olympic Organizing Committee said today that 103,882 volunteers have been selected for training as unpaid workers for the 1988 Seoul Summer Olympics and the 1986 Asian Games.

The committee said about 116,000 people had applied since it appealed last year for volunteer workers for the two events. It said a final selection will be made in August.

Olympic organizers, who also are in charge of the Asian Games, said earlier that about 75,000 people would be needed.

Meanwhile, Sports Minister Park Se-jik said in an interview today with the Korea Herald that the government will launch more strenous sports diplomacy toward communist and Third World countries to ensure the success of the two Seoul competitions.

Officials here have been working to achieve full participation in the Seoul games, although South Korea has no diplomatic relations with any communist country. In what was seen as an encouraging sign, the Soviet Union sent officials and athletes to sports meets here last year.

In a recent cabinet reshuffle, Park, a retired general considered close to President Chun Doo-hwan, replaced Lee Young-ho, who had come under criticism when an agreement on foreign television rights for the 1988 Olympics was seen as falling far short of South Korean expectations.

Park, who is described as well-experienced in organization, noted that the two international sports meets would provide a good chance to give South Korea ''an added momentum'' in the development of sports.

''The upcoming games will no doubt serve to encourage the people's orderly behavior and enhance their law-abiding sense,'' the former head of the Capital Defense Command and the Government Administration Ministry was quoted as saying.

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ATLANTA (AP) - Former Atlanta Falcons football player and television sportscaster Harmon Wages will turn himself in at the minimum-security camp of the Atlanta Federal Penitentiary Monday to start a three-month sentence for cocaine possession.

Wages lost a last-minute effort Friday to get his sentence commuted to probation when U.S. District Judge Orinda Evans denied the request. Wages was sentenced last month to three months in prison and five years probation.

In sentencing Wages last month, Judge Evans said she would allow him to turn himself in to authorities on his own. He is to report at 2 p.m. Monday.

Wages was acquitted on all felony charges, but convicted on four misdemeanor charges of possessing cocaine.