Everton defender Yerry Mina has suffered a fresh injury setback in Sydney.
The 28-year-old, who started alongside James Tarkowski and Michael Keane against Celtic, picked up a hamstring issue in the Sydney Super Cup clash and is now set to undergo a scan on the problem.
Everton went on to win the match on penalties but the victory came at a cost.
Abdoulaye Doucoure also picked up a knee injury in the game - further depleting a central midfield that lost Tom Davies to injury after he suffered a knee problem in training.