I'm glad he came. He is not just better than Andrea Onana at the moment statistically, but also better that Martinez. I'm sure he will have a quick impact against Manchester City next week during the Manchester derby.
That's the thing, though. Some players have decent numbers before they came to United, but somehow they failed to perform or regress (except those with an EPL record or exceptional ability like Fernandez). Even Fernandez isn't without issue as far as what a pundit said on the internet. I'm not one to believe their nonsense, but I agree that there's something in United that needs to be solved so that player don't regress easily. Maybe it's about their signing profile, who knows. Hard to give solution when I can't see the full picture.