2015, Juventus bought out the remaining half of Daniele Rugani's registration rights from Empoli, for an additional €3.5 million. Rugani was a key player for Empoli that season, appearing in all 38 of Empoli's league matches that season without being substituted or booked, in addition to scoring 3 goals, as the club finished the league in 15th place. Juventus In the summer of 2015, Rugani officially returned to Juventus. He made his debut with the club on 30 September 2015, coming on as a substitute in a 2–0 home win over Sevilla in the UEFA Champions League group stage, also making his European debut in the process. He made his first start with the club on 16 December, in a 4–0 win over cross-city rivals Torino in the Derby della Mole in the round of 16 of the Coppa Italia. His league debut with the club came four days later, as he came on for veteran defender Andrea Barzagli in the 56th minute of a 3–2 away win over Carpi. He made his first league start for the club in a 2–1 away win over Sampdoria in Serie A, on 10 January 2016. On 24 April, Rugani was booked for the first time in his entire Serie A career in his 53rd Serie A appearance. He received a yellow card in the 72nd minute of a 2–1 away win over Fiorentina; he had last been carded at club level with Empoli, on 1 March 2014, in an away Serie B fixture against Siena. Following Napoli's loss to Roma the following day, Juventus clinched the league title with three games to spare. On 21 September 2016, Rugani made his first appearance of the season and scored his first goal for Juventus, in a 4–0 home win over Cagliari. On 7 December, Rugani scored his first ever UEFA Champions League goal on his third appearance in the competition, in a 2–0 home win over Dinamo Zagreb. On 14 December, Rugani extended his stay at Juventus, signing a new contract that would run until 2021. Following the sale of Leonardo Bonucci to Milan in the summer of 2017, the 2017–18 season saw Rugani receive more playing time in central defence with Juventus. In total, he made 22 Serie A appearances for Juventus, and 26 in all competitions, scoring two goals, both of which came in the league, as Juventus once again finished the