Lisbon:Italy's Christian Vieri marched out of a news conference in Portugal on Sunday vowing not to speak to the Italian press again. Tension rose in the Azzurri camp before their decisive group match against Bulgaria on Tuesday. At least two Italian newspapers reported that Vieri, criticised for his disappointing displays, had argued with goalkeeper Gianluigi Buffon after Friday's 1-1 draw with Sweden. Italy have drawn their opening two games at Euro 2004 against Scandinavian opponents. It's a must-win situation for Italy against Bulgaria to have any chance of making it to the last eight.