It seems like Chelsea are also keen on letting Lukaku remain at Inter for a longer time by extending his loan contract there.
Lukaku has already been targeting to stay at Inter from now on so this is very good news for them. Chelsea don't want to bring him back because they have witnessed how he played in the past. They wouldn't like to take another risk by relying on him in the attacking line. Lukaku's bad performance was due to his happiness level in the end. Because he was very happy with Inter before and we all must be knowing how awesome scorer he was back then. As he is back from an injury now he would start playing for Inter again finally.
Apparently, that is what will happen to Lukaku with his future with Inter.
So far, there is no sign of Graham Potter needing his services at Chelsea. but what is certain, the Blues have returned to find their best form of performance under the direction of Graham Potter. They are in fourth place in the standings, with 20 points.
slowly but surely, Chelsea was able to find the rhythm of the game again although it can't be said to be very maximal.
Currently, Chelsea have Aubameyang and there are still several players who fill Lukaku's position.
so, like you said. it is very likely that Lukaku will stay with Inter, after all Lukaku has not fully recovered from the injury he suffered. we will not know if it will have enough effect on its performance later.