For now, Inter's attack line is quite guaranteed with the arrival of Marcus Thuram, it's just that the midfield and defense still need to regenerate new players for next season. Especially the rumors that goalkeeper Andre Onana will leave Inter if he agrees to join Manchester United will add even harder work for Inter.
I think Inter's progress for next season will be quite difficult if it doesn't immediately add young players who have good stamina to compete competitively with other strong Serie A teams. We know there are a lot of veteran players over 33 years who are still at Inter and it will be quite troublesome if they are not so consistent over the next season.
Inter made a ton of money last year with being cup winner if I am not wrong, ucl finals runner-up, and being in the top four of the league. When you combine all those together with the extra tickets being sold, and the extra merchandise being sold, and the money you make from winning those and tv rights and all that, the combined money they made is huge.
I criticized them heavily after they sold Lukaku after a great season but that didn't mean that it stopped them, they did very well anyway and I think they are doing a good job, Lukaku is back again as well but he is not really the way he used to be after the injury. Long story short they will have all the financial needs covered and will be able to make a profit when the time comes but first they will build a better squad too.