Kessie scored both goals for the 2-1 win.
“It's a very important win for us. I am happy with the three points, but we must continue working to be ready for next weekend," Kessie told Mediaset Premium.
“I had a knock, so I had to go off early. I'm very pleased to have scored my first brace for Milan.
“Gattuso was a great champion, I've just started now and I need to grow slowly by learning from him. I am happy and must continue like this."