Moeen Ali is to undergo a scan on Friday after suffering soreness in his left side which meant he missed England’s practice session in Perth on Thursday.
The Worcestershire all-rounder will not feature in England’s opening two-day warm-up game against a Western Australia X1 at the WACA starting on Saturday.
England have two more warm-up matches before the first Ashes Test in three weeks time.
Moeen, who last week signed a new five year contract at Blackfinch New Road, has enjoyed a superb 2017 for his country in Test cricket.
He is the 10th highest wicket-taker this year with 30 victims in seven Tests at an average of 21.30.
Two of Worcestershire’s 2017 overseas players are in the top five of Test wicket-takers during this calendar year.
Australian spinner Nathan Lyon, who played four Specsavers County Championship matches as a replacement for John Hastings, has amassed 46 wickets in seven Tests.
But not far behind is Indian all-rounder Ravichandran Ashwin who played in the final four Championship games of the summer.
He has picked up 44 wickets in eight Tests.