Frazier Campbell is Premier League quality (and works!), so are Medel, Caulker, Marshall, Noone, Mutch (but not against Palarse) and possibly Bellamy and Theo. Declan John may be Premier quality one day - but is not yet (like Adam Matthews when he was with us, he needs to prove he can defend). The problem is we have had two managers this season, and neither of them (in their different ways) have been good enough for the Premier League.
Zaha does not, on what we have seen, look like a Premier League player. He definitely wouldn't get into a top 10 side in this league. I'm with others on this: I never wanted him in the first place, and did post when we signed him that I believed he was just a diving show pony - whose only plus was that he might get us a penalty some time this season (he hasn't even managed that).
Daehli is a very pretty player, but too lightweight and too slow to be effective, and the same will be true in the Championship - flatters to deceive.