Speaking post-match at the San Siro, Gattuso confirmed he would not tolerate anything less than 100 per cent from his players.
“Tomorrow is another day and in football you cannot have any resentment," the former midfielder said of Kalinic.
“I have 25 players and the rule is the same for everyone.
“During the two hours of training they need to put everything into it. I want to see professionalism and commitment on the pitch.
“Whoever doesn't train well stays at home. Every match we are playing for something important, for us all matches are fundamental."