Bakayoko triggered a 15 million forced buyout in 15 appearances, so Milan don’t want to use him.

According to La Gazzetta dello Sport correspondent Marco Pasotto, Bakayoko will automatically trigger a buyout clause of 15 million euros as long as he makes 15 appearances for Milan this season, which is why Pioli does not want to give him any chance to play.
Bakayoko joined Milan on loan from Chelsea for two seasons in the summer of 2021 with a buyout clause of 15 million euros. Bakayoko made 18 appearances for Milan in all competitions last season, but so far this season he has not been given any chances to play in official games and has not been included in the Champions League list, considering that the players are not injured. This situation also makes the outside world confused.
In fact, in addition to the competitive factors, the contract problem of Bakayoko is also an important reason. His 15 million euro buyout clause contains specific trigger conditions, if the player makes 15 appearances this season (at least 45 minutes each). The buyout clause will be forced to trigger. This clause is limited to the last year of the loan contract, so 18 appearances last season are not counted.
From an economic point of view, Milan obviously do not want to spend 15 million euros to buy out Bakayoko, so they do not want to take the corresponding risk, so Pioli is also very careful in hiring, no matter how to rotate the midfield, Bakayoko will not get a chance to play.
As a matter of fact, Milan are planning to send Bakayoko away ahead of time this summer, as the annual salary of 3 million euros is also a big burden, but so far no one is willing to accept Bakayoko.