“Once the issue is settled, [Getty Museum director Michael] Brand said, the two sides expect a “fruitful cooperation” that “could include long-term loans” of artworks. Greece is seeking the repatriation of a rare gold funerary wreath, a tombstone and a stone torso of a young woman, all acquired by the Getty in the 1990’s. It has also demanded a votive relief that J. Paul Getty, the museum’s founder, bought in 1955. Asked whether he felt pressure to cede some artifacts to shore up the Getty’s reputation, Mr. Brand responded with a terse “No.”