John Stones missed England training on Wednesday through illness.
Boss Gareth Southgate has had to deal with several absentees and fitness concerns in the build-up to Euro 2024.
All 26 players were able to train on Tuesday – their first session after arriving in Germany – including Stones, who went off with an injury in Friday’s friendly against Iceland.
But while the defender appears to have avoided injury, he was absent from training due to illness.
The remaining 25 squad players trained at their Spa & GolfResort Weimarer Land base as preparations for Sunday’s Group C opener against Serbia continued.
