Danny Welbeck sat out England’s training session on Thursday ahead of the game against Croatia.
The Arsenal forward also missed training earlier this week as a precaution but he is set to be included in the squad for the trip to Croatia.
Earlier, Danny Rose pulled out of the squad because of injury.
Gareth Southgate’s side travel a tough Nations League double-header this month, kicking off at Croatia on Friday before heading to Spain.
Rose and Alex McCarthy missed the first training session as a precaution, but the Tottenham left-back and Southampton goalkeeper have now withdrawn from the squad
“Having arrived in camp with minor injuries, @Alex_Macca23 and Danny Rose have now returned to their clubs and won’t feature in this month’s game,” said the post on England’s Twitter account.
🚨 Squad update 🚨
— England (@England) October 11, 2018