Grella was named as captain of Parma for the 2006–07 season, and played a key role helping the team avoid relegation from Serie A for a second consecutive season. On 20 June 2007, Grella signed a three-year contract with Torino, one of several new signings made by "The Bull". The move to Torino was a free transfer due to the expiry of his contract with Parma. During his one season in Turin, he was a regular member of the side, although his season was interrupted by injury on several occasions. He scored one league goal for Torino, a powerful volley from the edge of the penalty area, which cannoned in off the far post to draw level with Fiorentina. The goal was a candidate for goal of the month for January in Serie A. It was only the sixth league-goal of his career.