A coach can certainly change everything even without extensive experience, but if he skilled at managing formations and strategies, I think chivu can transform Inter milan into a stronger team. I say this because I've seen xabi alonso successfully transform Leverkusen, and chivu could do the same. But we'll see how well he performs this season.
Furthermore, in Serie A, Several major team, like ac milan, are experiencing a decline in performance. This will certainly benefit Inter and other teams. But inter must work hard, as underestimating their opponents could cost them the title, as they did last season.
We must understand that little by little these coaches will take their course and will bring improvements according to their experiences, I'm not saying that it will all be easy for them, especially for Chivu, taking a Champions League finalist team and trying to win will be very difficult.
Mere experience might not be enough. Understanding the weaknesses of opponents and building strategies around them might help Chivu even more. If he truly has in mind to transform Inter, he must also think like the player he once was from 2007–2014 when he wore the Nerazzurri shirt, and now again as their coach in 2025. It takes total commitment, adaptability, and the ability to blend his past experience on the pitch with modern tactical demands. If he can balance those elements, then Chivu has every chance of guiding Inter to new successes.