 Complete the following phrase:  On 30 June 2015, Pellegrini signed for fellow Serie A side Sassuolo for a fee of 1.25 million. In terms of the transfer agreement, Roma retained a buy-back-clause which afforded the club the opportunity to re-purchase Pellegrini at a future stage. He made his debut for the club on 8 November 2015, starting in a 10 league win over Carpi, and scored his first goal the following month when he netted in a 30 win over Sampdoria. He ultimately made 20 appearances for the season, including one in the Coppa Italia, and scored three goals. During the 