As much as I like Musetti, I'm hoping for Carlos to win. I mean, I really like Carlos, too, so that's not the reason. A Musetti/Sinner final would likely be one-sided. The Italian #2 ain't beating the Italian #1 in the final at Roland Garros, no way.
On the other hands, Nole fans should be rooting for Musetti against whom Djokovic would have a much better chance of winning the title.