Chelsea striker Danny Sturridge is in danger of missing the London Olympics.
PA Sport says Sturridge is undergoing tests for suspected meningitis.
The 22-year-old is understood to have fallen ill over the weekend and been admitted to St Mary's hospital in Paddington for tests.
Sturridge's condition is said to have improved over the last 48 hours, but his place in the 23-man Great Britain football squad, named yesterday, is clearly in doubt.