Bayern Munich announced new midfielder Joshua Kimmich suffered a thigh injury in Tuesday's match, but is only expected to miss a couple of days.
Kimmich collided with AC Milan midfielder Nigel de Jong early in the contest. David Alaba came on in relief for Kimmich after the 20-year-old was gingerly trotting around after the collision. Kimmich played down the injury after the match, calling his injury "only a charlie horse".
The incident incited and argument between de Jong and Bayern manager Pep Guardiola in the tunnel before the second half, a confrontation he addressed after Bayern went on to win 3-0 against AC Milan.
"I was upset for Joshua Kimmich," Guardiola said [Sport1]. "He can't play tomorrow or for the time being. He is a top player in my team will become one of the best players in Germany in the next ten years.
Alaba shared Guardiola's dismay, telling ZDF: "The foul against Kimmich needs to be punished harder. The ball was clearly gone. Nigel de Jong rushed fully through."
Milan manager Sinisa Mihajlović played down the incident after the match, defending his midfielder in his press conference after the match.
"We are playing football here and we are not at the Ballet," Mihajlović said. "There are fouls."