Inter Milan's game at faltering Juventus on Saturday could be stopped if home fans again racially abuse visiting striker Mario Balotelli although the 19-year-old is unlikely to start for the Serie A leaders.
Two goals from Ronaldinho helped AC Milan to a 3-0 win at toothless Juventus on Sunday which piled the pressure on Juve's rookie coach Ciro Ferrara.
Allegri was sent off towards the end of the game for his fierce protests over refereeing decisions.
- 'We will have to play with a lot of intelligence' - 'We will be able to see a fantastic footballer on the pitch'
Photos from the match between Bayern Munich and Juventus played on Wednesday
Champions Juventus returned to the top of Serie A with a 4-0 home rout of Cagliari on Wednesday, while former leaders Napoli dropped to second after being held to a goalless draw at Genoa.
A first-half double from Karim Benzema helped Real Madrid cruise to a 3-0 victory away to Cadiz that moved them top of La Liga.
Juventus bounded to the top of Serie A by securing a battling 2-0 victory at Palermo after former striker Amauri condemned AC Milan to a 2-1 defeat at home to Fiorentina on Saturday.
France and Juventus midfielder Paul Pogba has been banned for four years for a doping offence earlier this season.
For Napoli, the match highlighted their struggling form, marking three consecutive defeats across all competitions for the first time since October 2016. They are fifth with 24 points.
Juventus reached the halfway point of the Serie A season with a commanding five-point lead over Roma after thrashing Verona for the second time in four days on Sunday.
Real Madrid's Rodrygo struck twice and Jude Bellingham was also on target as the visitors enjoyed a 3-0 win at lowly Cadiz.
Cristiano Ronaldo was involved in all three of his team's goals as Juventus came from behind to beat Napoli 3-1 in a Serie A top-of-the-table clash on Saturday to maintain their perfect start to the season.
"It would be a big deal, increasing the team's appeal and also because it would bigger business for Juve, through merchandising," a Milan-based trader said.
Juventus, who have won only one of their last five games and have dropped 18 points from winning positions this season, stay on 80 points followed by Atalanta with 74 and Inter Milan on 73 with three games each to play.
Juventus suffered their first defeat of the season at Lazio but the champions put pressure back on Antonio Conte's side by moving one point clear at the top
Paulo Dybala upstaged his fellow Argentine Lionel Messi by scoring two exquisitely taken goals to set Juventus on the way to an emphatic 3-0 win over an underwhelming Barcelona in the Champions League on Tuesday.
Leaders Juventus were denied a 16th successive Serie A win when they were held 0-0 at Bologna in a game marred when an object, possibly a firecracker, was hurled at their team bus as they arrived.
Ivan Toney, once Brentford's lynchpin in attack, has moved to Al-Ahli for 40 million pounds ($52.50 million).
Argentine teenager Mauro Icardi scored twice as Serie A leaders Juventus lost 2-1 at home to lowly 10-man Sampdoria and Edinson Cavani's hat-trick helped Napoli to a 4-1 win over AS Roma on Sunday.
Manchester City advanced to the Champions League quarter-finals despite suffering their first home loss in over a year, going through 5-2 on aggregate after a 2-1 defeat by Swiss champions Basel on Wednesday.
Juventus continued their awful run with a 1-1 Serie A draw at modest Livorno on Saturday, leaving the famous Turin club three points adrift of the fourth Champions League qualifying spot.
Andrea Pirlo and Miralem Pjanic provided the moments of magic to inspire leading Serie A duo Juventus and AS Roma to battling victories on Sunday with the gap between the sides remaining at three points.
Juventus climb to top of Serie A with win over Lecce
Gianluigi Buffon celebrated his 100th Champions League game for Juventus in typical fashion on Wednesday, making a string of brilliant saves in a 2-0 win at Monaco in the first leg of their semi-final.
New Juventus signing Diego stole the show in only his second Serie A start with two stunning goals in a 3-1 win at AS Roma on Sunday.
Juventus staged a superb revival to battle back from two goals down and rescue their Champions League hopes with a 2-2 draw against Bayern Munich in their last 16 first leg on Tuesday.
Juventus are on 77 points, seven ahead of Atalanta, who thumped Brescia 6-2 on Tuesday, with five matches remaining.
Juventus goalkeeper Gianluigi Buffon had a solid game in his first appearance since the World Cup as his side eliminated Catania with a 2-0 home win in the Italian Cup last 16 on Thursday.
Juventus defeated second-placed Lazio 2-0 at home on Saturday to take another huge step towards their fourth straight Serie A title and boost their confidence for Wednesday's crunch Champions League clash in Monaco.
Sarri was without Cristiano Ronaldo for the trip to the Gewiss Stadium as the Portuguese forward recovers from a knee problem ahead of Tuesday's Champions League meeting with Atletico Madrid in Turin.
Barcelona beat Juventus 3-1 to claim the Champions League title on Saturday thanks to goals from Ivan Rakitic, Luis Suarez and Neymar in an entertaining final at the Olympic Stadium.
A stunning first-half strike by Kwadwo Asamoah gave Serie A leaders Juventus a 1-0 win over Fiorentina as they maintained their 100 percent home record in the league in Sunday.
Juventus shattered Real Madrid's dream of a record-extending 11th European crown when Alvaro Morata scored against his former club to secure a 1-1 Champions League draw with the holders on Wednesday and send Juve into the final 3-2 on aggregate.
Stefano Sturaro, who joined Genoa on loan from Juventus in January before the deal was made permanent, put the home side in front in the second half before fellow substitute Goran Pandev secured the shock result with 10 minutes remaining.
A summary of Saturday's action in Serie A and La Liga.
Juventus ended their poor run with a 3-0 home win over Napoli in the Italian Cup last 16 on Wednesday but Diego's opener caused huge controversy.
'This was why Juventus brought me here. To help do things that they have never done before'
