The Gunners have kickstarted their preseason with wins over Nurnberg and Everton.
"They are test matches so we want to try different things and get the boys up to speed physically," he said. "We're starting to build the minutes ready for the league and at the same time compete against two good teams.
"We need to get the right impression and the right understanding, and then we start to be better as a team. They're very talented, but at every point, every game has to be won.
"We've been watching [Orlando]; we watched the game they played last Saturday and the previous Saturday. The squad has evolved a lot in the last few years, and it is a beautiful stadium so it should make for a good match."