Löfgren started his career with Swedish Allsvenskan side Helsingborg in 1950, and garnered a reputation of being one of the best athletes in Swedish football. He moved to Italy in 1951, and was being scouted by numerous clubs before joining Lazio. After a good first season, in which he scored 7 goals from 20 games, he suffered a serious injury which kept him out of the whole 1952–53 season.