 For 2000–01, Peternac joined Real Zaragoza, receiving limited playing time.He was then loaned to Real Murcia, where he played one season in the second division before closing out his career back with the Aragonese (one match, followed by retirement due to injuries).Peternac earned his first cap for Croatia on 10 February 1999 against Denmark, in a friendly played in Split (0–1).