No, you won't be proved right. You can't be.
Even if McLean goes on to be city's worst ever signing, you cannot possibly have seen enough yet to justify writing him off. Unless you know something from his Peterborough days which all their fans seem unaware of.
That was his 4th game in a new team in a new division. Just because Fryatt settled in well, doesn't mean that McLean is ****, just because he hasn't settled as well.