GettyPeter McVitieIt's NWSL vs WSL! English giants Arsenal & Chelsea heading on US tours this summerChelsea FC WomenArsenal WomenWSLWomen's footballWomen's Super League giants Arsenal and Chelsea will head to the United States this summer during pre-season.Article continues belowArticle continues belowArticle continues belowArticle continues belowChelsea & Arsenal book US toursWill face NWSL sides for first timeEnglish teams to meet in Washington D.C.