Tom Davies will leave Everton's trip to Australia after suffering a knee injury in training.
The midfielder sustained the issue during a session in Sydney ahead of the club's match with Celtic - the first of two games for the Blues in Sydney Super Cup, which they won 4-2 on penalties after it finished 0-0 after 90 minutes at the ACCOR Stadium.
Davies will undergo a scan in England as club medics await further details on the extent of the problem.