I haven't seen any that is outright yet, like who will win the whole thing, it is not out there just yet but I think it will be available soon enough. I think it's clear that we are going to end up with something that will take some time, and it is not going to be easy, but we should remember which teams are on it.
I honestly don't remember from all leagues, but I know that United will be in it right? If that's the case, we need to consider United to be a strong contender for it no matter what you think of them. I know many people think that they are not that great, and mostly you are right, but we should consider how United is always United and they may end up winning the whole thing if they play it right, which is why I may put some small amount for them.
Most do not have them yet, they might be waiting for the august because we are going to start seeing the first games then, maybe even as much as group stages but that I doubt we will wait for. All in all, I think United would be in the top three conversation no matter who is in, sure they may not be the best for some people, but they will be one of the best according to majority.
However, we need to remember that Liverpool was leading the premier league by the time they lost to Atalanta, which shows you that while United is good, better than most, they could still lose to a team nobody thought they would lose to. Which is why I think it's important to not bet on outrights just because you think a team is good, do that if you believe they are better than everyone.