The 29-year-old is on loan from Chelsea and sealing a permanent move back to Inter could be difficult as the Premier League side looks to recoup the 97.5 million pounds ($117.50 million) they paid the Serie A club in August 2021.
"Everyone knows what I want. Right now I have to do whatever is necessary with the team to make Inter win and then we can talk to Chelsea," Lukaku told the press.
"The idea is to finish (my career) with (boyhood club) Anderlecht. I'm (nearly) 30 years old, my son started school here and plays in the Inter academy. I'm fine, Inter always has the ambition to keep growing.
"I want to stay here and do things right. I hope to do well with Inter in the next six months, work to the maximum and then at the end we talk to Chelsea and hope to find a solution."
Their campaign in Qatar ended with the striker being consoled by Belgium's assistant coach Thierry Henry and Lukaku said the former France international was the 'ideal' candidate to take over after Roberto Martinez stepped down.
"For me, Henry is the next coach of Belgium. There are no doubts, I say it openly: he will be the next coach," Lukaku said.
"He has the respect of all the players, he has won everything. He knows how to coach, he knows what we have to do to get there.
"He wants to win, and I don't think the federation is going to get a coach who wants to change everything and start from scratch."