Talking about financial problems I think clubs in Serie A always have the same problem and in this case Inter is no exception.
I think it's still possible to bring in several players, especially if you really intend to bring in Lukaku, whose price has even been cut quite a lot by Chelsea so they can sell Lukaku. I think it's still possible.
Now that Dzeko is certain to leave, Lukaku has also confirmed that he will return to Chelsea if he is not permanent, so like it or not they have to try to bring in players so that the conditions in the attack line are not disrupted.
Marcus Thuram has confirmed a place in the striker position but of course that won't be enough given that at least one option for backup is still possible to minimize injuries.
Seems all Serie A team faces with financial problem due their activities window transfer never won't to buy some player with higher expensive values, lately with AC Milan must sell their important player Sandro Tonali to Newcastle United with record deal of €70m. Huge amount for Serie A exactly for AC Milan and they can spent to buy some player has values under €20m and possibilities for signing three players from fresh fund get by selling Sandro Tonali.
Current transfer, Inter Milan success signing Marcus Thuram from Borussia Mönchengladbach for replacing position leave by Edin Dzeko have reached agreement for joining to Fenerbahçe. Marcus Thuram sign with frees transfer after that player not extend his contract and become free agent. Almost serie A teams transfer dominance with player have been free agent or try looking with loan option from Primer League teams and some of them difficult reach to main squad in previous teams.
There have been many club officials who have complained about this and indeed that is what is now happening to clubs from Serie A as Giuseppe Marotta once said, who incidentally is one of the chief executives of Inter Milan and a member of the FIGC board who once said
Italy's Serie A is at risk of insolvency and needs more financial support from the government during the pandemic as well as stages at higher capacity
With this, actually you can see from the statement that there is, of course, this is a problem where even big clubs have complained about financial conditions, so what is expected of a club that seems mediocre in Serie A, so I think this will be a protracted problem looking at the statement that there are clubs in Serie A also have almost never received support for more than 2 years when the Pandemic made this clearly even more difficult for Serie A clubs.
With Thuram actually it's quite good but as I said before, things like this have to be other options because when talking about strikers, of course there have to be some adjustments where of course they have to look at all possible forms including the player's fitness because they always give more portion to Lautaro and Thuram over and over again this is not going to be very good.