SELECT AVG(year) FROM table_name_5 WHERE runner_up = "portugal" AND third_place = "italy" AND best_goalkeeper = "nuno hidalgo"
Tahun berapa runner-up Portugal dengan Italia di tempat ketiga, dan kiper emas Nuno Hidalgo?
CREATE TABLE table_name_5 (year INTEGER, best_goalkeeper VARCHAR, runner_up VARCHAR, third_place VARCHAR)