Garella made his Serie A debut with Torino during the 1972–73 Serie A season, appearing in the final eight minutes of a 1–0 defeat to Lanerossi Vicenza, replacing Luciano Castellini; this was his only appearance for the club. In 1973, he joined JuniorCasale, where he remained for two seasons, first in Serie D and subsequently Serie C, even scoring a goal from a penalty.