Wasps back-row forward Sam Jones sustained an ankle injury during an England training session on Tuesday at Brighton College.
Jones will undergo further examinations to diagnose the full extent of the injury. He will return to his club this afternoon.
The flanker, who is uncapped, was named in the England EPS squad at the end of last week.
Wasps will hope to have Jones available for their blockbuster Premiership clash on Sunday away to champions Saracens.