England manager Gareth Southgate says his side must improve defensively if they are to win Euro 2020.
The Three Lions face off against Croatia in the first game of their group stage fixtures on June 13th at Wembley.
Southgate knows the nation is expecting success this summer, but he believes their defensive work is not yet up to par.
England did manage a clean sheet in a 1-0 friendly win over Romania over the weekend.
"I didn't like us without the ball in the first half but that was the whole team. That started from the front," Southgate told reporters when asked about his side's defence.
"We weren't disciplined in the way we defended. Our recovery runs were not good enough. It meant that the midfield was stretched and the back players had too many decisions to make.
"They were having to come in spaces where they shouldn't have needed to be.
"Without doubt we can improve on that. I have also got to allow the team that played the reality that we had made a lot of changes and had to preserve some players and give others minutes that they needed.
"There is a lot of work to be done on the training ground as, without a doubt, we cannot give up the number of chances we did [against Romania] and not expect to be punished.
"We can improve on all the small details in the two performances we have had. We were able to pick up a lot of learnings from the first game and feed them in to [Sunday's game]. You know, some of the things on discipline and details on defending set plays."
