Haven't see the numbers, but heard it wasn't double his Real salary, which was 10 million a year (previously I saw it was 5 mil a year, my bad). Highest salaries at United:
1. Ronaldo - $26.8 mil (hopefully gets a deal with Dortmund done soon)
2. De Gea - $19.5 mil
3. Sancho - $18.2 mil
4. Varane - $17.7 mil
5. Martial - $13.0 mil
Let's say it's on par with Varane. He'll come in and get dropped in the starting XI as an upgrade to the worst player in their starting XI, playing alongside his on field partner for the national team. As long as he plays a majority of the games, it'll be worth it. Again, if it were another winger, I'd be pissed. But CDM has been an issue for years and managers keep trying to force McTominay in when he should be sold. Casemiro is a better defender than Fred, making Fred the box to box midfielder and then you have Bruno or Eriksen as the more offensive minded one.