This is a fair worry, honestly. I've watched Matheus Cunha have some pretty intense moments, like getting frustrated during matches or even arguing with local media. That kind of passion can be awesome, but it can also rub people the wrong way, especially in a squad as huge as United's.

United has sometimes struggled to get everyone pulling in the same direction, especially when new signings with big personalities show up. If Cunha gets angry about not getting the ball, or reacts badly to criticism, that could create drama in the locker room. Sometimes, though, that fire gets a team pumped up—in my experience with local teams, having someone who genuinely hates losing can push everyone to try harder.

United fans want players who care, but they also want guys who act professionally and keep things together when it's tough. If Cunha brings his teammates with him and they get what he's about, it could be really cool. But if personalities clash, it could get messy fast. I'd say it's a real risk, but maybe he’s the spark they've been missing.