Lukaku, who is already comfortable playing at Inter Milan, certainly wants to stay at Inter Milan longer. And currently the negotiation process between Inter Milan and Chelsea is still going on quite complicated. because Chelsea wanted to sell Lukaku but it turned out that Inter Milan only wanted to maintain Lukaku's status as a loan player. And Lukaku, who has indeed rejected an offer from an Arab club that offers a large salary, deserves a thumbs up because he is not tempted by money but he prefers to build a reputation by continuing to play in European football. And currently there are 2 Chelsea players who have rejected offers from Arab clubs.
I don't know why Inter Milan doesn't want to buy Lukaku. I think Lukaku deserves to be the main player in Inter Milan, he already proved his quality and his contribution. Lukaku is still a productive striker and his market value is only around €40m. I'm sure Inter Milan won't get difficulty spending €40m, they also need Lukaku because they only have Martinez in the striker position after Edin Dzeko left the club. If Inter Milan has a respect for Lukaku, they must sign him in this transfer window.
I'm sure Lukaku doesn't want to play in Saudi. He seems comfortable playing in Serie A. If Inter Milan doesn't want to sign him, I guess he will be waiting for an offer from other Italian teams.