Lewis Baker has described his first senior tour with Chelsea as a "great experience".
The 19-year-old midfielder was one of the youngest players to be included in Jose Mourinho's squad for their European training camp, which concludes with a match against Werder Bremen in Germany tomorrow.
He told the club's website: "This is my first tour with the senior squad and it's been a great experience for me. I'm training with some of the best players in the world and that can only help me improve.
"You definitely notice the difference [from training with the Under-21s], particularly off the ball. Everything is so compact and with the way the players defend it's really hard to get through and create openings.
"You don't have much time on the ball because of the way they press you, as soon as you try to turn you're always going to have somebody in your face. It's just a quicker tempo but it's good for everyone, especially the younger players."
Baker made his senior debut for Chelsea in the FA Cup last season.