Chelsea have signed Juventus striker Gonzalo Higuain on loan for the remainder of the season with an option to buy him for 36m euros (£31.3m).
The Blues also have the option to extend the Argentine’s loan deal until June 2020 for 18m euros (£15.6m).
Higuain, 31, spent the first half of the season on loan at AC Milan, scoring eight goals in 22 games.
“When the opportunity to join Chelsea presented itself I had to take it,” said Higuain.
“It’s a team I’ve always liked that has a lot of history, a wonderful stadium and they play in the Premier League, a league I’ve always wanted to play in.”
As the deal was not completed before Wednesday’s midday deadline, he cannot play in Thursday’s Carabao Cup semi-final second leg against Tottenham.
The striker played under Chelsea boss Maurizio Sarri while at Napoli in 2015-16, equalling the Serie A goalscoring record with 36 goals.