Fred is not 'immense'. This world we live with exaggerated claims.. things aren't good, they are 'amazing'... people no longer disagree, they 'clash'... etc. How on Earth could you describe Fred as being 'immense' is just beyond me. KDB is immense. Pogba (when on his game...)... Salah, Mane... Aguero.... Kane... these are players who are immense.
Fred is playing better than he did when he first arrived, and that isn't asking for much. His performances now, in my opinion, are what we should expect as basics for a first XI Manchester United central midfielder. And he still has these crazy moments (note Wolves disallowed goal....).
Fred needs to go up another gear before I even consider him some top player. Ability is there, and he is improving, but if someone offered decent money now, I would take it, because you can replace what he currently gives us. He's playing much better yes, and with more consistency... but Fred is no super midfielder, not on performances at the moment. Good is just that, 'good'.
To suggest he is immense is silly.