The Giallorossi dominated the opening 45 minutes, but only won the semi-final first leg 2-1.
"In the first half we used up a lot of energy and ran out of steam a little. We tried to score more goals, but were unable to do it.
"Erik Lamela worked hard and created three scoring opportunities, which is good for a striker. Unfortunately he was unable to finish them off."
The second leg is at San Siro on April 17, as it was moved from the original January 30 date due to a schedule clash.
"We have an advantage and will try to increase it in the second leg. We did everything right in the first half and it could've ended 4-0 with no complaints."