He was easily the "worst" player on the pitch in the preseason clasico. And no, he absolutely had some invisible performances (bar the goals, which after all count the most to be fair). He wasn't overall excellent like Frenkie for example, who's older and more settled to be fair (again).Bellingham has been good in the games he has scored and not been invisible.
He's also has the most freedom of any mid at a top club in Europe right now.
People like to compare him to Gattuso, but watch any highlight video on youtube and you see in a minute that his close control is downright excellent. He's 19, has 100 games for Barca and wins titles.Never seen whats so special about Gavi, he is not bad, but i don't think he is that big of a talent either.