Crystal Palace reportedly fear losing Wilfried Zaha to another spell on the sidelines after their star player returned early from international duty.
The Ivory coast attacker sustained a thigh problem earlier this week and is now back in London undergoing tests.
According to the London Evening Standard, there are concerns that the 25-year-old could miss the Eagles' next batch of fixtures.
Zaha was ruled out of Palace's home defeat to Southampton last month with a similar injury to the one sustained while away with the Ivory Coast.
The report indicates that the ex-Manchester United ace's involvement in Sunday's match at Everton is now in doubt - bad news for Palace, as they have not won a match without him in the side since a 3-2 success at Sunderland in September 2016.