We definitely need to be patient with Fernandes.
If you think of the major European leagues in terms of intensity, physicality and pace it's:
England 10
Spain, Germany 8
France 7
Italy 6
Netherlands, Portugal 4
He was a young-ish failure in Italy (6) and had to rebuild his reputation in Portugal (4). The chances of him hitting the ground running in England (10) are likely to be slim.
Hopefully it won't take as long as it did for Fred, but Bruno's physique makes me think the adaptation won't be quick. Skinny players are obviously capable of being tough, but it takes them longer than somebody with a naturally big frame.
I'd love it if he could save our season in the next few months, but I'm keeping expectation low. Between now and August is his preseason in terms of where I'm setting the bar.