It's caused by all of juventus fans were also hating him. Lukaku is the most incompetence player that has ever exist. He deserves it. No reason to keep him in chelsea or even serie a club. That's his karma. Inter and juventus already rejected him. The only way for lukaku to go to the saudi club.
This guy has even rejected an offer that was coming from the totenham. He is too selfish and think inter was everything in the past without even lookin at the secondary choice.
I would not be surprised if there are so many people who dislike him so much. That's why juventus was not interesting to sign him again. Chelsea shall sell him asap. He's a bad thing for the team. No place for lukaku in chelsea.
Yes, only club that currently exists for Lukaku is Al Hilal which plays in the Saudi League. Although Lukaku doesn't want to play other than League Serie A, but it seems he will play in Saudi, also Chelsea has reportedly given the green light to Al Hilal. Actually Inter have been trying to be able to recruit again, but Lukaku has another agreement behind Inter, if Lukaku not had another agreement maybe he ready at Inter right now, because the club has already received money from transfer fee andre Onana.