It’s going to be a difficult match to predict. Feyenoord is going to be a tough opponent for AC Milan in the second leg, although both teams will want to make every possible move to win, but as you said, you are right, Feyenoord is to be fighting for either winning or drawing; that is why the game is difficult to predict, although, as you said, AC Milan may be able to cover it; it's just 1-0, but we don’t know how the second leg will look, so let’s wait and see what AC Milan will do in that match. Feyenoord are not weak; we need to wait and see what will happen in the second leg.
Playing from home this time will be a advantage Milan will not fail to utilise, since this season, Milan has a good number of home performance which I can consider a very impressive one to be a reason to believe they will not allow Feyenoord na easy win at their home and moreover they lost by a slim chance to Feyenoord, one which they can make up for if they eventually are able to really win the game with a very good game score at the end of the game.