It’s good that Old Trafford isn’t being used. It’s always been a bit of a dump, but because it was one of the biggest grounds it always got games. It’s hosted Champions League finals, England games, cup semi’s etc all off the back of that.
It now has more local competition, and it is quite rightly being ruled out. The fact for European games some of the seats have to cordoned off speaks volumes about it’s ability to be a top level hosting venue.