Steve McClaren has confirmed Ashley Cole is a doubt to face Russia on Wednesday after injuring his ankle against Estonia.
The England left-back landed awkwardly when tracking back inside his own box and was clearly in discomfort while receiving treatment.
Cole had to be carried off on a stretcher having been unable to walk under his own power.
There was obvious concern on the England bench and McClaren admits it will be an anxious next 24 hours waiting to discover the full extent of the injury.
"Ashley Cole is obviously a doubt," McClaren told Sky Sports. "He rocked his ankle.
"That will be assessed over the next 24 hours which will be a critical period.
"It was a bit unfortunate because we were only going to give him another 10 or 15 minutes to make sure we started the second-half well."
Terry getting better
England could welcome back John Terry in Russia after McClaren gave a positive update on the England captain's knee injury.
He said: "John Terry looked better again this morning and we'll assess it tomorrow.
"If he gets better and better who knows, Monday he might train or travel with us and train on Tuesday.
"But he's still a doubt."