He said: "The fact that they are pushing on already and are in the England squad, while playing week in week out in the Premier League, can only be good.
"As long as everyone keeps progressing as they are at the moment, it will be good for England's future.
"We have a lot of English talent here at Arsenal and we will all be working hard to get into the national team.
"The longer you play with people, the better you get to know them.
"You bond, and being around the same players means that you bounce off each other. It will be good for the future.
"For their age, they are all really mature and fearless.
"You forget how young Jack is - he is such a confident lad - but at the same time they are all humble as well.
"When it comes to football, they are really focused and just get on with the job.
"They are technically very good and have the right mindsets to become world-class players."