Ibrahimovic gave Milan the lead with 1-0 in the 31st minute before he was warned after the big fight with Lukaku.
After a new warning in the second half, where the Swede entered carelessly in a close match, he was sent off and Inter were able to turn the match around and win 2-1 after Christian Eriksen decided in the 97th minute.
See the big fuss in the player above.