Yes, this one player will not be at Inter Milan next season, and I think that will be a good decision for Inter Milan, because this one player is really slow now. It's time for Inter Milan to have an attacker who has speed in my opinion. Learning from the matches in the Champions League, they lacked players with speed, so some of the counter-attacks they carried out had to run aground, because Manchester City could quickly close up the available space.
Inter has been completing marcus thuram's transfer. He just need to have done with medical check up before he will be officially announced by intermilan as a new player for the club. It seems like that thuram will be replacing lukaku as a partnerfor lautaro martinez next season. I hope that he will able to perform better in intermilan compared when he was playing for his old club. Chelsea is not giving approval for intermilan to take lukaku as loan again.
The club will only sell him to the arabian club. Intermilan can try to sell onana and used money from selling onana to buy lukaku as permanent transfer but i doubt if intermilan will do that.