Milan tested out a 4-3-3 formation today ahead of their trip to Chievo, dropping Mario Balotelli.
The Rossoneri need to get back on track quickly after a 2-0 defeat to Sassuolo saw them fall 11 points adrift of third place.
In recent weeks the 4-4-2 system had given them a sense of solidity, but the goals are drying up.
Today Sinisa Mihajlovic practiced his side in a 4-3-3 shape with Carlos Bacca flanked by Keisuke Honda and Jack Bonaventura.
Riccardo Montolivo is out of action, so either Andrea Poli or Jose Mauri would step in to midfield.
Milan also worked for part of the session with the usual 4-4-2, which at the moment has Balotelli partnering Bacca.
M’Baye Niang is out for the rest of the season after damaging his ankle ligament in a car accident.