The Leicester defender will miss the match against Scotland on Friday and the trip to Andorra on October 10.
Arsenal's Ainsley Maitland-Niles and Jonjo Kenny of Everton did not train on Wednesday and they were both sent for scans but are expected to feature in the two games.
The England U21s are joint top of their group with Ukraine after a 1-1 draw in Holland and a 3-0 home win over Latvia in their first two games the qualifying campaign.
Manager Aidy Boothroyd has been very happy with the way his players have started the qualifying competition.
"I was really pleased with the way it went, we got four points on the board in our games which was what we'd targeted and the way the group came together for the start of our campaign was pleasing," he said.
"We had some really good moments in both games, but there are still plenty of things on which we need to work on.
"Overall though, I was really pleased with how it went and now we need to move forward and build on our points tally in the next two games against Scotland and Andorra.
"The game with Scotland is an intriguing fixture and it's a really good game for us. The fact that the Scots beat the Dutch is good for the group I think, because it now sets it up nicely for our game with them.
"They're a team that will naturally want to beat us and they'll be working very hard to do that.
"Personally, as a passionate Englishman, I'm really looking forward to it."