The highly-rated 18-year-old joined the Blues from Belgian side Anderlecht in an £18m deal last summer but has not featured on a regular basis this term.
"If my situation at Chelsea does not evolve between now and the end of the season, it may be better to be loaned out for a season," Lukaku told the Belga news agency.
"A loan this season is not possible, as I have already played for two different clubs [but] if this situation endures, it might be better to play for another club for a year and then come back."
"Let's see what happens in the next six months. Many things could still change," said Lukaku.
The Belgian striker has made seven appearances this season.