Marco van Ginkel has said that he does not want to just sit on the bench at Stamford Bridge.
The 20-year-old told the team's website: "I want to learn a lot, to develop myself. I want to play games and not only sit on the bench, that's what I hope for, to play in games at these great stadiums and hopefully be important for the team, whether it is from the bench or from the start.
"I think I can play games and I think the Premier League is higher than the Dutch league, so you can learn more physically and technically, and develop. That's why I am here.
"I look forward to it a lot. It's not scary, but I will be a little bit nervous maybe! Playing with players like Frank Lampard and John Terry will be a huge thing. I played three years at Vitesse, but the Premier League is very good, and I will enjoy playing with these players with this experience."
Van Ginkel scored 24 goals in 41 games in all competitions with Vitesse last season.