WA all-rounder Mitch Marsh has flown to England on Tuesday to join Australia's World Cup squad.
Marcus Stoinis has been ruled out of Australia's clash against Pakistan on Thursday and could also miss Saturday's match against Sri Lanka.
Stoinis is suffering from a side strain sustained during the weekend's match-up against India.
It's been more than 12-months since March represented Australia in 50-over cricket.
Coach Justin Langer will consider even replacing Stoinis with another batsman in Shaun Marsh or another bowler in Jason Behrendorff.