United has to realize, just because manager is terrible, doesn't mean players are good. First of all, Onana should be waived, I do not even mean sold, if they can find any team that is willing to get him for free, then just give him away for free.
As long as he is not on your team and you are not paying his salary, that is a win, I think they should not be looking at even a single euro out of this. That dude, could be the very worst goalkeeper I have seen in my entire life, this isn't just about United anymore, yeah it's true that players that goes to United starts to play worse, there is truth to that, but THIS bad? That dude conceded so many penalties that went right through his hand, that makes no sense to me at all.