It isn't just his girlfriend. 2 other women have made complaints. 2 different countries and therefore 2 different police forces are now investigating. Add to that, it appears that united arranged for a private doctor to treat one of the women whilst she was in a Manchester hotel. That is not to say united did anything wrong, all football clubs employ people to pander to a footballers needs 24/7, but it does tend to back up the accusation that she was injured. How ? only time will tell but following on from Greenwood and even Giggs, it is shit they do not need so they are distancing themselves.
Don't forget, if he is charged and convicted, a decent reporter might just ask if united bought him knowing about the allegations. (The rumours is they did) That's £80 mill down the pan.