Arsenal have confirmed the signing of Southampton full back Calum Chambers.
The 19-year-old becomes Arsene Wenger's fourth signing of the summer having signed a long term contract at the Emirates for an undisclosed fee.
He is the fifth high profile departure from Southampton following the sales of Rickie Lambert, Adam Lallana, Luke Shaw and Dejan Lovren.
"We are very pleased that Calum has agreed to join us," Wenger told the club's official website.
"The way he adapted to the Premier League last season with Southampton at a young age shows that he has tremendous quality. He has a lot of the attributes that we look for in a young player and I am sure that he will do well with us."
Chambers also becomes the third Southampton starlet to swap the south coast for north London, following in the footsteps of Theo Walcott and Alex Oxlade-Chamberlain who made the same move as teenagers.
The defender said: "I am so happy to be signing for Arsenal. They are a team I have much admired for their playing style, and a team who have been one of the top sides in Europe for many years. I'm looking forward to joining up with my new team-mates today and beginning preparation for the season ahead.
"I would like to take this opportunity to say thank you to everyone at Southampton FC for everything they have done for me and for making this move possible."