Lukaku made his initial loan move permanent in July, with Everton snapping up the Belgium forward for a club-record fee.
While the 21-year-old has yet to rediscover the form he showed in his loan spell at Goodison Park, Lukaku is focused on securing a move to a "top club" in the future.
"They [Chelsea] know I'm a good player but that I want to develop so I can eventually get back to playing for a club like Chelsea," Lukaku told The Sun.
"I don't have a secret ambition to rejoin [Chelsea] - there are other clubs in the world.
"I just want to grow as a player and eventually arrive at a top club again."
Lukaku has 10 goals from 33 appearances in all competitions this term.
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