Socceroos coach Graham Arnold has included six debutants in his experimental Australia squad to face South Korea in next month's international friendly.
In his first match since early April, Diego Costa suffered an ankle injury, though Atletico Madrid says the bone is not broken.
Chelsea midfielder Ruben Loftus-Cheek hurt his ankle in a 3-0 friendly victory over New England Revolution.
Liverpool manager Jurgen Klopp will go up against former team Borussia Dortmund in one of three pre-season friendlies the Reds have announced in the United States.
Brazil coach Tite said Vinicius Junior has to play well for Real Madrid if he is to be involved at the Copa America after the teenage sensation "missed an opportunity" during the international break.
Argentina goalkeeper Juan Musso said it is an "honour" to have Lionel Messi return to the international stage.