Roy Hodgson is concerned by the lack of midfield options he has for England's friendly against France on Tuesday.
England coach Hodgson, already without 15 regulars, was left cursing his luck as Michael Carrick suffered suspected ankle ligament damage in the 2-0 defeat to Spain in Alicante on Friday.
The Manchester United midfielder, who has only started two England games since the World Cup because of injury, twisted his right ankle in the final minutes of the match.
With Jordan Henderson, Jack Wilshere, James Milner and Alex Oxlade-Chamberlain out, Hodgson is lacking experienced midfielders for the France, which goes ahead despite the terror attacks in Paris.
Dele Alli, Eric Dier and Jonjo Shelvey have just nine caps between them, while Fabian Delph is unlikely to start having just come back from injury and Ross Barkley may also need a rest after playing the whole 90 minutes in Spain.
"Going into the game on Tuesday it's a bit worrying," the England manager said. "The midfield is already very, very depleted and we lost another player in Michael Carrick.
"Of course we want to be a bit careful with Fabian Delph because it was tough for him out there [against Spain] after the absence he has had from football for so long."
Hodgson said England think Carrick "has twisted his ankle and normally that means ligament damage."
He added: "We will have to get it scanned. We hope it is not that serious. It will keep him out of Tuesday, and I fear it will be longer than that which is amazing misfortune for him."
Wayne Rooney will return to the starting XI after being used as a second-half substitute against Spain, but Jamie Vardy's participation is in doubt after he missed Friday's friendly through injury. That means Harry Kane may start his second England game in the space of five days.
Kane said he hoped England would bounce back from the Spain setback by beating France.
He added: "We're playing at home at Wembley and we want to put in a good performance and get a win. France will be tough -- they have got some great players as well -- but we've just got to stay confident, stay focused and do the right things."
Hodgson said he and his players were "shocked" by the terrorist "atrocities" in Paris but he respects the decision to go ahead with Tuesday's friendly at Wembley.
England were playing Spain in Alicante at the time but once they returned to their hotel on the outskirts of Benidorm after the match, the scale of the tragedy became clear.
Hodgson, his coaching staff and players watched coverage of the attacks on television when they returned from their 2-0 loss and they were shocked by what they saw.
"On behalf of the England coaching staff and players, I would like to pass on our heartfelt condolences to the French nation at this extremely difficult time," the manager said. "The events in Paris have left us all shocked and we are thinking of the victims, their loved ones and all those affected by these tragic events."
FA chief executive Martin Glenn told his French counterpart Noel Le Graet in the early hours of Saturday morning that he would have no complaints if the French Football Federation (FFF) did not want the game to go ahead.
But the FFF felt cancelling the game would send out the wrong message.
"Shortly after the match last night the FA contacted the FFF to express our deep sympathy and ask if they wanted to go ahead with Tuesday's scheduled game at Wembley Stadium," Hodgson added. "Today the FFF has informed us they would still like to play the fixture. We respect that decision and will prepare accordingly -- both on and off the pitch.
"The match will be a serious occasion but one that shows that the football world is united against these atrocities.
"I'm sure the England team and our fans will play their part and show solidarity with our French friends on Tuesday evening and provide support for both teams during this difficult time."
The FFF will be hosted in the Royal Box and there is a chance the Wembley Arch will be lit up in red white and blue to show solidarity with the French.