Allegri's defensive-minded approach did not go down well with fans, who were also frustrated that the team faltered during games they had been dominating.
Milan technical director Paolo Maldini said in December that the club's proposed move, with San Siro co-tenants Inter Milan, from the 95-year-old stadium was needed to ensure future success for both clubs.
Needing four points from their final two games of the season, Milan stand on the brink of a first Serie A title since 2011.
An AC Milan spokesperson said only that "AC Milan remains focused on improving its performance on the pitch and to develop the club."
Chelsea were initially put up for sale by owner Roman Abramovich following Russia's invasion of Ukraine before sanctions were imposed on the oligarch by the British government, effectively giving it control of the club.
Chasing a first league crown since the days of Diego Maradona, a sold-out stadium which bears their hero's name will host two teams locked on 57 points.
AC Milan slipped up for the second time in as many weeks on Friday with a 1-1 draw with Udinese which gave their Serie A title rivals a chance to reach them at the summit.
In the following lines, ET sheds light on the most important world events that took place on December 16.
Liverpool and Milan produced another Champions League classic that brought to memory the great duels of the two sides in Istanbul and Athens.
The Middle East and North Africa (MENA) region is the main TV international package still to be awarded by Serie A ahead of the season start.
Just three points separate second-placed Atalanta and Juventus in fifth with two games left to play.
The former Manchester United, Paris Saint-Germain and Barcelona forward's current deal had run until the end of the season.
The news that he would be cast in the Asterix film, directed by Guillaume Canet and scheduled for release in 2022, came as a surprise.
Ibrahimovic's comments were criticised by American sprint great Michael Johnson
Ibrahimovic joined Milan in December 2019, and signed a one-year extension last summer to carry on in Serie A for another season in 2020-21
AC Milan fought back from two goals down to draw 2-2 at home to Parma.
Former Brazil striker Ronaldinho Gaucho said he has tested positive for COVID-19 and is self-isolating.
Algerian midfielder Ismael Bennacer scored his first Serie A goal as a rampant AC Milan thumped Bologna 5-1 to maintain their excellent recent form at the San Siro on Saturday.
AC midfielder Franck Kessie scored from a penalty to give AC Milan a 2-2 draw away to Napoli in Serie A on Sunday, sparing the blushes of his goalkeeper Gianluigi Donnarumma whose mistakes provided the hosts with both their goals.
Italian football giants Inter Milan and AC Milan were both back training on Friday two months after a strict lockdown which has hit the northern Italian city hard.