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.