The tycoon is under pressure to finally relax his grip on the club he calls "my Milan", which has failed to win any major silverware in the past five years and is now in the red.
However, the club remains one of the most famous names in world football, having being crowned champions of Europe seven times and winning 18 Italian titles.
"It's very likely that an agreement will be reached next week that will lead to a deal in the next month," a source familiar with the situation said on Saturday.
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The agreement would be between the consortium, and Berlusconi's family holding company, Fininvest. The makeup of the Chinese group is not clear.
The consortium has valued the club at 700 million euros (£553.2 million), including debt, another source said last week. The club had 188.5 million euros in debt at end-2015 and made a net loss of 89.3 million euros.
A deal to sell all of AC Milan is still far from certain.
Berlusconi, 79, has proven very reluctant to relinquish control of the club, though he has said he cannot give it the kind of additional capital that wealthy Arab and Asian investors have been pumping into AC Milan's European rivals.
Last June, a group led by Thai businessman Bee Taechaubol reached a deal to buy a majority stake in AC Milan.
A person who followed the negotiations said Berlusconi changed his mind at the last minute and decided at the time he did not want to sell more than 48 percent in the club.
The agreement was revised to sell the 48 percent for 480 million euros, but the new deal was never finalised.
(Reporting by Elvira Pollina; Editing by Mark Bendeich and Toby Chopra)
