Priority is to change the tactical mindset of the manager so that we play more attacking football. If we buy Messi and Ronaldo in the next window but don't get the ball to them it won't make a difference to our results. Ok, I'm stretching a bit as they might just get pissed off and take the ball on a 80yd mazy run and score....
Point being, AM needs to be comfortable with the players he has, and morst importantly realise that scoring goals is much more fun that trying to shut teams down all game. We have two of the best strikers in the PL up front. Find a way with what you have got to get them the ball in the box as often as possible from every conceivable position on the pitch. This player looks exciting (in the limited clips that are available, but then you could make one of Harweood or Heskey if you only had 3 minutes), but it won't make a difference if our set up doesn't allow him or the other creative players in the team to express themselves.