The 20-year-old striker enjoyed a fruitful season on loan at West Bromwich Albion in 2012/13, where he scored 17 Premier League goals in 38 appearances for the Baggies.
Lukaku will return to Stamford Bridge next season under the tutelage of a new manager - believed to be Jose Mourinho - and will be hoping for the opportunity to prove himself in Chelsea's senior team.
"My future is up to me and the manager," he told talkSPORT. "First we need to have a conversation about what his plans are and then we'll go from there.
"I'm ready to go there and do my best because my first ambition is to play at Chelsea, but I have to be realistic. I'm 20-years-old and I need to play, so we'll see what will happen."
Lukaku joined Chelsea from Anderlecht in the summer of 2011 for a fee that could rise to £17million with add-ons, but is yet to feature regularly in the Blues line-up.
And, after an impressive campaign at The Hawthorns, the Belgian international is keen not to see his development hampered by another season on the fringes of the Chelsea squad, with a preference for guaranteed football elsewhere.
"I'm very proud to be a Chelsea player," Lukaku added. "I've had a very good season on loan and I will go back and show my qualities.
"Hopefully I will stay there but in football you never know. We'll have to see what will happen in the future."