After the goalless stalemate with Fiorentina on Sunday evening, the first-team squad was back at the Konami Training Centre on Monday.
The Azzurri face Lecce at 20:45 CEST on Wednesday evening at the Stadio Maradona as part of Week 4 in Serie A.
The squad was split into two groups, with those involved from the start at the Franchi taking part in a recovery session involving gym work.
The other members of the squad kicked off with activation work in the gym before technical and tactical drills out on the pitch. There was a small-sided game to round off the session. Diego Demme underwent physio.