I agree I thought it was a red however the only thing I could see that provides doubt, is that Asp is sliding underneath Lo Celso. That's to say that Gio is already bringing his foot down without the knowledge of knowing Asp's leg will end up coming underneath his foot.How on earth did he stay on the pitch?
This doesn't change my view that I think it's a red just offering a possible reason why VAR thought it wasn't.