 In the ensuing summer he moved to Spain, joining La Liga club Real Betis on a five-year contract.His spell in Andalusia was disastrous, as he never dislodged veteran Luis Fernández from his starting position, also suffering with injuries (torn ligaments and cartilage in his right knee).After cutting ties with Betis, Castellini returned to his country in the summer of 2006, joining Parma F.C.