Wilfried Zaha has been forced to wear a leg brace after the Crystal Palace winger was perpetually fouled in their opening-day defeat by Huddersfield Town.
The 24-year-old will be further assessed by the south London club's staff on Sunday and Palace boss Frank de Boer is hoping he is not told his main man is sidelined, with them going up against Liverpool at Anfield next.
News of an injury to Zaha would only make the Dutchman's week even worse after his home debut ended with him being beaten 3-0 by Premier League new boys Huddersfield.
Zaha played the full 90 minutes but was given a kicking at Selhurst Park, and his right knee seems to be suffering as a result.