England boss Gareth Southgate faces an anxious wait after Arsenal star Bukayo Saka limped off in Saturday's goalless draw at Brighton.
The 20-year-old forward left the field holding the back of his leg following a heavy challenge in the last minute at the AMEX stadium.
Saka was replaced by Ainsley Maitland-Niles.
Saka is due to join up with England this week for the upcoming World Cup qualifiers against Andorra and Hungary.
And Southgate will be hoping for a positive prognosis.
High-flying Brighton missed the chance to go level on points with Premier League leaders Chelsea following a drab goalless draw which ended resurgent Arsenal's winning run.