It is rumored that Inter will still bring Lukaku, who is currently back at Chelsea, but the costs might be burdensome for Inter because reportedly Chelsea have also received an offer from a Saudi club to sign Lukaku. As you said, even though Lukaku is a veteran, but yeah his ability is still worthy of being in Serie A, also playing for Inter is what this guy wants. By the way, now Inter Milan already has another striker, Marcus Thuram who is obtained for free, Inter Milan is really deepening the strength of their squad and I'm happy to see it.
Lol Inter is very fortunate to get Marcus Thuram for free despite the market value of €32 million I am not surprised if Inter contract him for 5 seasons with a salary of 6.5 million per season, besides being able to be relied upon Inter will think about other benefits
what Inter need to do is provide opportunities for Marcus Thuram to be an investment in the future, as a young player he still has a chance. I think the decision to bring in Marcus Thuram is an option if Inter fail to bring Lukaku back because indeed the agreement to get Lukaku has been away IMO. Now, Inter have Marcus Thuram and thus, will Inter still plan to sign Lukaku with the many problems he is having at this moment. I personally am really not completely sure though, indeed, the chance for Lukaku to return to Inter is still open but I think the chance is very low. But yes, if Lukaku returns to play at Inter next season, then surely Inter will have good quality players in their attack for both main players and substitute players.