Sørensen officially signed for Juventus on 27 August 2010 after a trial with the Turin-based club in July of the same year. He was originally included as a member of the Juventus Primavera team for the 2010–11 season, however he was called into the first team midway through the 2010–11 Serie A season by then-Juventus coach, Luigi Delneri. After injuries to Leandro Rinaudo and Zdeněk Grygera that would rule them out for several months, Sørensen was called up to the first team for the first time against Bologna on 23 October 2010, and again against Milan. In the next league match, on 7 November, due to the unavailability of centre-backs Giorgio Chiellini and Nicola Legrottaglie, Sørensen made his first start alongside Leonardo Bonucci in the centre of defence. In that match, The Old Lady defeated Cesena 3–1.