Barkley is a Blue for £15m
Ross Barkley has joined Chelsea.
It's a five and a half year, deal for the former Evertonian and he will have the number 8 shirt.
He said: "I'm overwhelmed, I'm looking forward to it and I'm really excited to get started.
"To be given a fresh start at a new club like Chelsea, it's unbelievable for me. I'm looking forward to continuing where I left off at the end of last season and hoping to improve and add more goals to my game."
Club director Marina Granovskaia said:"Ross is a player we have long admired and are certain he will prove to be an important player for Chelsea. He possesses outstanding technical and physical attributes, matched with good experience of the Premier League and a strong desire to succeed at the highest level. We welcome him to the club and look forward to seeing him in action."