Philadelphia Union vs Chicago Fire prediction (Over/Under)

At the edge of the playoffs, Philadelphia Union and Chicago Fire will play today an important match that could decide who will stay near to the playoffs phases and who will not. The hosts have a big advantage because they are playing home and the guests have some important players missing for this round. But Chicago Fire is unpredictable as it was against Orlando City where they won with 2-1 away and with a man less. I think that a better pick is over 2.75 goals because I expect at least 3 goals here.