The Soviet Union has granted asylum to an American citizen identified by The Washington Post as a former Navy enlisted man who had special intelligence clearances. The Soviet news agency Tass identified the man only as "Glen Michael Sauter, a U.S. citizen," and said he sought asylum because "he had to hide from U.S. secret services which unfoundedly persecuted him. Guided by humane considerations, the presidium of the Supreme Soviet of the U.S.S.R. complied with the request of Glen Michael Sauter and granted him asylum in the U.S.S.R.," Tass and the newspaper Izvestia said. A spokesman for the U.S. Embassy said he knew nothing about Sauter but said he is probably a private American citizen who "has exercised his right to live where he wants." However, a spokesman for the FBI in Washington told The Washington Post the man is Glenn Michael Souther, a Navy veteran in his early 30s who disappeared in May 1986 shortly after graduating as a Russian major from Old Dominion University in Norfolk, Va.