Haaland looks like a great signing. Especially when you consider United spent more than that on the likes of Maguire, Pogba, DiMaria, Fred, Martial, Fernandes etc. none of which exactly set the world alight.
Obviously it's going to be way more than 51 million after fees and wages but at 21 years of age who knows what he will be worth in a few years time... They could probably sell him at 28/29 and recoup a load of the outlay. Great business.