The The 23-year-old winger gave the Nerazzurri a perfect start at the Stadio Olimpico with his first-half opener
Keita Balde continued his goalscoring form with a goal as Inter Milan settled for a 2-2 draw against Roma in Sunday's Serie A fixture.
The Senegal international helped the San Siro Stadium outfit bounce back from their 1-0 Uefa Champions League loss to Tottenham Hotspur with his third league goal of the season.
Balde who broke his Inter Milan duck with a brace last Saturday finished off a beautiful team move in the 37th minute.
After the restart, Cengiz Under's 51st-minute goal put both teams on levelled terms but Mauro Icardi fired the visitors ahead again before Aleksandar Kolarov's effort from the penalty spot ensured both teams settled for a share of the spoils.
Balde was substituted for Matteo Politano in the 62nd minute but Inter Milan still maintain their third spot in the Serie A behind Juventus and Napoli.
They visit league leaders Juventus for their next league outing on Friday.