England captain Harry Kane thinks the national squad still has a lot to do despite reaching the World Cup semi-finals this summer.
Gareth Southgate's side, who lost 2-1 to Croatia in the last four of the tournament in Russia, take on Spain at Wembley in their opening UEFA Nations League clash on Saturday night.
However, Kane has warned his teammates not to rest on their laurels as they attempt to qualify for Euro 2020.
"It is good to see them again," he told Sky Sports. "Before I left, the missus said, 'Oh, you are back off on your boys' holiday again!' And that is what it kind of feels like.
"We got on so well and to be back so quickly… the World Cup does not seem that long ago and it is like coming back to meet with your mates again.
"But we know in the back of our minds that there is a lot of hard work to do from now until the Euros to first get there and then hopefully go even further than we did at the World Cup."