What's all this about Carrick being a replacement for Scholes? He isn't. Carrick is a deep-lying playmaker, plain and simple. He is never going to match Scholes for goal-scoring or movement in the opposition half, he'll never have the offensive repertoire of Scholes...mainly because he is nothing like Scholes.
As has been repeatedly mentioned, Carrick is similar to Pirlo or Alonso and I think we're going to need a formation change to play he and Scholes in the same midfield. There's no way a Scholes-Carrick pairing can do the biz in a 4-4-2. Throw that right out the window.
VanNistelrater's post is spot on, except Carrick is nothing like Scholes, the rest is bang on. We need someone else in to play behind Carrick.