The Belgian striker is heading back to Chelsea seven years after leaving the club for Everton for less than a third of the price, going on to play for Manchester United before moving to Italy and winning Serie A with inter Milan.
Lukaku, who has signed a five-year contract worth around £212,000 a week, is not expected to be involved this weekend as Chelsea begin the Premier League season against Crystal Palace.
Thomas Tuchel has spoken of Lukaku’s ability to lead the line as being key to Chelsea’s pursuit this summer, with the likes of Timo Werner and Kai Havertz deployed as the focal point last term and Tammy Abraham not seen as a viable option.
The pressure will be on Lukaku to deliver as Chelsea’s record signing, but Blues director Granovskaia has faith in the 28-year-old after a title-winning season in Italy, for which he was named Serie A’s MVP.
“Romelu Lukaku is quite simply one of the world’s best strikers and goalscorers,” Granovskaia said. “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. I’m sure all Chelsea fans will join me in saying welcome home, Romelu!”