Lukaku has sparkled during his current loan spell at West Bromwich Albion, which has thus far seen him bag 13 goals from 25 league appearances.
But asked whether he would be definitely back at Chelsea in the summer, he admitted he would be waiting until the end of the season.
"I am just waiting until the end of season, I am just performing for West Brom at the moment we will see what will happen and I don't want to talk about it either," he said.
Fellow Belgian Christian Benteke has also had a glittering campaign during his first season with Aston Villa and Lukaku hopes his progression continues, perhaps with a move to a 'big' club.
"I think, I hope Christian will make a move to a big club so he can improve his game as well," he said.
"This will be also important for the national team, like I want to go back to my parent club in the future - but we are doing well and I hope it will continue."
Lukaku also spoke about Frank Lampard, and insisted he would love to see him stay at Chelsea - given how much he learned from the midfielder during his time there last season.
"He was one of the guys who helped me a lot and he introduced me to training and I am really grateful to him and really happy," he said.
"He is very important and one of the key players and hopefully he gets an extension."