The 20-year-old striker is currently on a season-long loan deal at the Toffees from Chelsea.
"It's not a bad idea," he told BBC Sport. "If we play Champions League, yeah, why not? I was watching the games this week and I miss European football a lot.
"I would like to be successful at Chelsea but I have to work and grow and be a better player and then at the end of the season see what is the best decision for my career."
Lukaku has scored seven goals in the Premier League for Everton so far this season.