Sunday 18 June 2017 11:45, UK
We put Rob Holding, Calum Chambers, Kortney Hause and Dominic Iorfa to the test to see how well they know each other.
The four players are part of Aidy Boothroyd's England squad for the European U21 Championship in Poland.
The Young Lions opened their campaign with a goalless draw against Sweden last Friday, with Slovakia up next on Monday before a final group game against the hosts on Thursday.
Chambers, who is also team-mates with Holding at Arsenal, started against Sweden, while Wolves duo Hause and Iorfa were unused substitutes.
As colleagues for club and country, we wanted to find out just how much they know about one another.
Sky Sports reporter Patrick Davison is with the England squad at their training base and he put the questions to the quartet.
Hit play on the video at the top of the page to watch
