The Los Angeles Clippers Thursday re- signed free agent center Zeljko Rebraca to a multi-year contract. Rebraca, who is entering his fifth NBA season, averaged 5.8 points and 3.2 rebounds in 58 games for the Clippers last season. "Zeljko did an excellent job for us in the low post last season," vice president of basketball operations Elgin Baylor said. "We look forward to him having a very good year for us, and we expect him to play an integral part in the success of our team." A second-round selection by Seattle in the 1994 NBA Draft, the Yugoslavian has averaged 6.1 points and 3.4 rebounds for his career.