England Under-21 manager Aidy Boothroyd lauded Jude Bellingham as the Borussia Dortmund sensation impresses following his move to the Bundesliga.
Bellingham joined Dortmund from Birmingham City in July, turning down interest from Premier League giants Manchester United.
The 17-year-old midfielder has made the seamless transition from Championship football to Germany's top flight, starting all three of Dortmund's Bundesliga matches this season.
Bellingham also became the youngest player to play for England's U21s during last month's Euro 2021 qualifiers, having been called up from the U17 team.
As England's U21 side prepare for Tuesday's match against Turkey, Boothroyd said: "He is the oldest young player I have ever come across.
"He has settled down now, he is comfortable in his environment, he is giving stick out to the lads and he is getting a bit back.
"He has to do his education; he is learning German, he is trying to learn how to drive and he is doing his driving test in Germany. He has a lot going on and he is loving the fact that he can just go out and train and be free.
"He has made a brilliant start at Dortmund to get the young player of the month. I fully expect him to build on that and I have been really impressed with him as a person and as a player. He is really a credit to his parents, a cracking guy, he comes into the room with a massive smile.
"He is always looking at who he can dig out from more senior players. He has settled in fine and I am really pleased with how he has performed in training. He will be involved tomorrow night. As the Under-21s, we are really happy to have such a talent with us."