Witsel's move to Juve collapsed on deadline day while the Belgium international was already in Turin and had passed a medical.
Napoli coach Maurizio Sarri is hoping to hear the Champions League anthem at the Stadio San Paolo many more times after enjoying his first taste.
Sacchi enjoyed huge success in charge of Milan, winning back-to-back European Cups after catching Berlusconi's eye at the helm of Parma.
Inter Milan coach Frank de Boer has confirmed that Marcelo Brozovic has been punished enough and will return to the squad at the weekend.
Vincenzo Montella's focus on youth should be lauded at AC Milan but the hard work starts now for the Rossoneri's young hopefuls.
AC Milan president Silvio Berlusconi has spoken of his regret at being forced to neglect the club in recent years.