Cons
Fixture Congestion
This is a hugely important part of the season for Orlando City. The playoff push is full go with half the season left to play, and after a month of inconsistent form, it's vital for the Lions to figure out their issues to have a chance at a home playoff game.
More importantly, they host the New York Red Bulls in the US Open Cup semifinals a week from the Arsenal match. With a league game on the weekend against the Philadelphia Union, that's a lot of important games in not a lot of time. Adding yet another game in the midweek adds unnecessary stress to the squad in a crucial crux of the season.
International Embarrassment
I don't want that to happen to Orlando City. It's just a fact that Arsenal are orders of magnitude better than Orlando and a laughable result like that is completely possible Wednesday night.