Duncan made his first start at the San Siro and put in an excellent performance.
He told inter.it: "It was great, I dreamed of playing at the San Siro and as soon as I saw the fans I felt excited. I'm very happy because I train with great players and know I've still got a lot to work on. Where have I come on the most? I'm improving tactically and in terms of my positional sense.
"I found it a bit difficult with only two strikers ahead of me because I'm used to playing with three forwards, but things got better as the game wore on and I found the right position. Will I sleep tonight? Yes, don't worry about that!"