Pierre Kalulu is a central part of AC Milan's defensive play, and he has been instrumental in the team's success this season.

Kalulu joined AC Milan from Ligue 1 side Monaco in January 2020, and he quickly established himself as a key player for the club. He is known for his strong defending skills, and he has been praised by many for his ability to read the game and anticipate opponents' movements.

One of Kalulu's most notable performances came in the team's victory over Atalanta on November 15th, when he was involved in several crucial tackles and interceptions. His performance earned him a place in the Italian Footballer of the Month award, which recognizes the best footballer in Serie A each month.

Kalulu's versatility also makes him an asset to AC Milan's defense. He can play as a central defender or a wing-back, depending on the matchday lineup. This allows him to provide different options for the coach and make it harder for opposing teams to predict his position on the pitch.

In addition to his defensive abilities, Kalulu is also a solid ball-player who is comfortable with possession and distribution. He has shown that he can create chances for his teammates and contribute to the team's attack.

Overall, Pierre Kalulu is a valuable player for AC Milan, and his contributions have helped the team achieve great success this season. With his strong defense, versatile playing style, and all-round skillset, he is definitely one of the key players for the future of AC Milan's defense.