Chelsea re-sign Belgium striker from Inter Milan for a club record £97.5m.
“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,” Lukaku said.
“I have supported Chelsea as a kid and now to be back and try to help them win more titles is an amazing feeling.”
“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,” she said.
“‘The way the club is going fits my ambitions perfectly at 28 and just coming off winning Serie A,” he added.
“Hopefully we can have a lot of success together.”
“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.