Considering what is happening with Antony now, I think United is rotten to the core at this point and a lot of players are playing well below their abilities.
Greenwood smashing it in Marseille too. But Marseille and Betis are not top class sides with immense pressure behind them, so we must take that into consideration too.
Man I problems are systematic as well as bludgeoning money on players who failed. But it isn't so easy either, especially with the emergence of cash rich City across the city.
I'd imagine that if City were at the level they were prior to major investment, that a number of their youth prospects would have come through United too.
If Girona were City type of size we too would have major problems too. And guys like Cubarsi we would never have poached. Just as one example.