The impact of Milan's substitutes in a win over Torino pleased head coach Stefano Pioli.
Milan trailed 2-1 in the 90th minute, but two goals from Hakan Calhanoglu and one for Zlatan Ibrahimovic saw them past Torino.
Atalanta's memorable season continued with a seven-goal victory at Torino, the biggest margin of victory they have ever achieved in Serie A.
Manchester United are reportedly preparing to make another move for Tottenham midfielder Christian Eriksen in January.
Nicolo Barella's first-half injury against Torino was central to Antonio Conte's post-match thoughts despite Inter's emphatic victory.
Amid wet conditions, Inter enjoyed an impressive victory over Torino to keep up the pressure on Juventus.
Inter have made a good start under Antonio Conte, who admitted he has given advise to his players on how to have sex during the season.
Amid links to Zlatan Ibrahimovic, AC Milan may look elsewhere as they try to strengthen their attacking options.
The state of the pitch and Torino's tactics meant Juventus could not play to their fluid best in the derby, according to Maurizio Sarri.
The Scudetto battle is not down to Juventus and Inter, according to Maurizio Sarri.