Manchester City are ascertaining the extent of Ederson's recurring groin injury amid fears the goalkeeper could face weeks on the sidelines.
The Brazil international hobbled out of Saturday’s 5-2 victory over Crystal Palace 15 minutes after his long pass assisted James McAtee’s goal.
Ederson has been plagued by groin problems all season, severe enough to prevent him from training fully for the majority of the campaign.
The 31-year-old, who weighed up leaving City for the Saudi Pro League last summer, has undergone tests to determine the prognosis before Pep Guardiola’s side go to Everton this weekend.