UEFA president Michel Platini has confirmed that the group fixture between England and France has not sold out.
The match, which is due to be held in Donetsk, is one of four fixtures that have not sold the entire ticket allocation for this summer's tournament.
"The stadia are sold out apart from four matches," said Platini. "It takes some time and has been a bit slow for some matches in Ukraine, including England vs. France. But we have no concerns that the stadia will be completely full to the rafters."
England are also due to play Sweden and Ukraine in the opening group games of the tournament.