Milan players - and Ancelotti - hit out at the performance of ref Stefano Farina after the match, much to Galliani's disappointment.
"Referees make mistakes, just like players, Coaches and directors," Galliani said. "We can't give our lads alibis and I don't want to comment on the disputed episodes.
"I think we could have closed out the game earlier because we had at least three gilt-edged chances to put the points beyond doubt, in addition to the potential penalty.
"I will reprimand the players, but I understand that sitting in the stands is different to being on the pitch."