Morata will now join up with the squad on its pre-season tour of Asia.

A strong, quick and skilful forward adept at leading the line and bringing his team-mates into play, Morata’s movement on and off the ball make him a constant threat to opposition defenders, whether he is running at speed from deep or looking to strike in the 18-yard box.

His goals come in all forms - outstanding long-range efforts, poachers’ finishes, headers and one-on-ones. He is also comfortable on either foot.

Upon completing his transfer, Morata said: ‘I am so happy to be here. It’s an incredible emotion to be part of this big club. I am looking to work hard, score as many goals as I can and to win as many trophies as possible.’

Technical director Michael Emenalo added: ‘We are delighted to complete Alvaro’s signing and welcome him to the club. We believe he can make a great impact for Chelsea and look forward to seeing him in action.

‘Alvaro has proven class at the highest level and his quality will be a huge asset to Antonio and the squad.’