"Playing at such a historic club like Arsenal is an incredible professional and personal opportunity. Although I am a firm believer in the quality and importance of the NWSL, I do believe that by going to London at this time in my career will not only give me a broader experience on the field, but also off the pitch," O'Reilly said in an Instagram post. "I have an immense passion for this amazing sport, and I am looking forward to equipping myself with a global experience, while helping Arsenal Ladies achieve their big ambitions."
"Hope's absolutely world class," midfielder Heather O'Reilly said. "We're proud of her for that accomplishment. I know she has a big one in mind, and that's to win the World Cup."