Look, I'm not saying he lighted the world on fire or been a constant starter for them, he wasn't. I'm even saying Inter wasn't the right club for him (and for that price, sheesh), especially at the time. What he needed was go straight to Spain/EPL and maybe now he'd be lots better (or maybe not - but the point stands).
I don't wanna compare players in bad enviroments, these are all good athletes we are talking about and what defines somebody as world class is being a constant beacon of light for the team. Inter banter era was a shitshow. It's players who are in a big club that is at the top but they aren't performing good enough that I say they don't have the right mentality to succeed.
Well, that's my way of looking at it. Surely we both agree while Muntari was a good athlete, nobody would build a team around him. Same with K-Dog. But these are set pieces that are in every team and clearly Inter didn't know what to do with K-Dog. Same with Brozović, to an extent, until Spalletti gave him a well defined role, he was a winger/CM ffs