Romelu Lukaku returned to Chelsea for a reported club-record fee of £97 million ($135 million) from Inter Milan.
Lukaku returns to the Blues seven years after his first spell at Stamford Bridge came to an end.
The Belgian striker was instrumental in securing Inter’s first Serie A title for 11 years last season, but the Italian giants financial problems forced them into selling their prized asset to the Premier League side.
“I’m happy and blessed to be back at this wonderful club,” said Lukaku, who has signed a five-year contract. “It’s been a long journey for me: I came here as a kid who had a lot to learn, now I’m coming back with a lot of experience and more mature.
“The way the club is going fits my ambitions perfectly at 28 and just coming off winning Serie A. I think this opportunity comes at the right time and hopefully we can have a lot of success together.”
Lukaku scored 64 goals in two seasons in Italy to quickly become a hero at the San Siro.
But the 28-year-old also has a proven record in the Premier League, scoring 113 goals during spells with Manchester United, Everton and West Brom.
The only blot on Lukaku’s career so far was his first spell at Chelsea as he failed to score in 15 appearances.
Signed as an 18-year-old as the apparent heir to Didier Drogba, Lukaku quickly grew frustrated at his lack of opportunities in the first team.
Drogba was the hero as Lukaku’s first season as a Chelsea player ended with them winning the Champions League for the first time in the club’s history.
“Since I left Chelsea, it’s been a long journey with a lot of ups and downs, but these experiences made me strong and the challenge is to try to help the team win some more trophies,” added Lukaku. “I can’t wait to get started and to help the club achieve more success.”
After lifting the Champions League last season, Chelsea are hoping Lukaku is the final piece required to make Thomas Tuchel’s side Premier League title challengers.
“Lukaku is quite simply one of the world’s best strikers and goalscorers,” said Chelsea director Marina Granovskaia. “We are absolutely delighted to be bringing him back to the club he loves, and are excited to be adding his talent to our Champions League-winning squad.
“We are of course looking to build on last season’s success, and Lukaku will play a big role in achieving our targets.”