GenscherForeign Minister Hans-Dietrich Genscher is expected to visit Israel in April or May, diplomatic sources here said today. They said his visit is no longer opposed in principle by the government, although Chancellor Helmut Schmidt has insisted it take place only after Israel completes its withdrawal from Sinai next April 26.

Schmidt himself shows no signs of accepting a seven-year-old standing invitation to visit Israel. According to one of his aides, he sees no reason to change his mind. But the Bonn government has obviously decided to maintain high-level contacts with Israel, especially after its two major partners in the European Economic Community (EEC), Britain and France, have been conducting a dialogue with Jerusalem on the foreign ministers level or have declared their intention to do so.