Hasn't this been directly denied by Bayern's management? This is only an issue, nothing more than that, I think, there is a lot of news like this, but when there is a direct objection from one of the parties concerned, I don't think this is going to happen, even though news always appears to heat up the atmosphere in the transfer season.
The thing is it doesn't seem like Cristiano Ronaldo wants to stay in Manchester United. but at the same time, it does not feel like he wants to move as well. so he is in a confusing situation right now and a lot of online media is trying to make the best out of this situation by making interesting news.
I also didn't see any news about this, I know that Ronaldo is not very comfortable with United's current situation but didn't say he wanted to move because this is just an indication. Even though it seems that when someone says they are not too comfortable, the news that they want to move is definitely linked.
But until now the fact Ronaldo has not said anything about it.