Newcastle United have completed the signing of Chelsea winger Christian Atsu.
Atsu spent last season on loan at St. James's Park, scoring five goals in 32 appearances as former Blues boss Rafael Benitez steered the Magpies to the Championship title.
A Chelsea statement said: "We wish Christian the best of luck in his future career."
"We are happy to sign a good player," Benitez told Newcastle's official website.
"He's shown us that he's a good professional and someone who is very keen to learn and improve.
"Christian has been a key part of our promotion campaign and he wants to help us to build something for the future."