Chelsea have completed the signing of Ajax playmaker Hakim Ziyech on a five-year contract. The Blues agreed a deal in principle to sign the Moroccan for £36.6million earlier this month.
Ziyech will see out the rest of the season at Ajax before making the move to Stamford Bridge in the summer.
“I am delighted and proud to have signed for such a huge club as Chelsea,” Ziyech said after agreeing personal terms.
“I am looking forward to next season and hope we can achieve great things together.”
Chelsea director Marina Granovskaia added: “‘We are delighted Hakim will be joining us in the summer, having been a key target of the club’s in this last window.
“He has consistently been one of the most dangerous attacking players in Europe in recent years, which we saw first-hand in our two games against Ajax in the Champions League.
“We wish Hakim and Ajax all the best for the rest of the season and look forward to welcoming him to Stamford Bridge in the summer.”
Chelsea boss Frank Lampard spoke highly of the player following the initial announcement two weeks ago.
“I think he’s a fantastic player,” Lampard said. “He first came under my eyeline in their run in the Champions League last year.
“I thought he was one of their stand out players. We have played against him twice this season so I know a lot about him.
“I think he has an incredible left foot; he has an elegance about him that can find a pass. I see a player that hopefully can have a big imprint on our team and the Premier League.
“At times this season, we’ve missed the player with the finishing touch. Hopefully, he can be a piece of that puzzle.
“I know he’s not coming now but it’s something exciting for us as a club and the fans to have him next year.”
One of Ziyech’s former team-mates and current Wolves defender Romain Saiss has backed the left-footed attacker to be a success in England.
“I speak sometimes with Hakim about his future because he deserves to play at a good club, a top league,” he said.
“I hope for him that soon he is going to move. Even if Ajax is a good club I think he can play higher and for an even bigger club.
“It would be a good thing for him to play in the Premier League. It’s a good league for him.
“The fans like a player like Hakim, skilful, exciting, and I’m surprised nobody has come for him.
“It was the same for Riyad when he was at Leicester.
“He needed time before he moved to City and I think it will be the same for Hakim.
“Riyad is more consistent now, scores goals, makes assists and is more clinical, showing the skill. I’m really happy for him.”