Fellaini was played as a box to box midfielder yesterday against a very energetic Liverpool midfield, with 3 men in the middle, who pressed high up the pitch. Being the box to box midfield, you have to be able to link glue things together and dictate play. Due to Fellaini not be the greatest on the ball, it was hard for us, as a team, to get a passing flow going. I know he was good against Palace and West Brom, but these teams dropped pretty deep, thus allowing Fellaini time on the ball where he could get his head up and pick a pass. Against high pressing teams, Fellaini struggles (this is not helped with the system we play. I still maintain that we'd see all of our midfielders move up a level if they were put in a 3 man midfield).
This is why I feel Fellaini should be our deepest midfield and could still prove to be very effective there for us. He wasn't bought to play eye of a needle passes or fancy through balls, he was bought with the idea of adding more bite into our team (something we've lacked over the years) and, although he wasn't brilliant yesterday, (who was?) Fellaini did get stuck in, completing eight tackles in the game, which is pretty high.
This is why, with the expense of Carrick next season, I would play, or at least give Fellaini a run of games playing as our deepest midfielder. Although Fellaini hasn't got the passing skills and positional awareness of Carrick, I feel he presses the ball pretty well. He's more of a 'I'll go and make the tackle with the possibility of getting dribbled past, rather than a 'I'll drop back to close down the angles with the possibility of a player running 30 yards with the ball and shooting', type of player. As good as Carrick is, I find he drops a bit too deep sometimes, thus forcing teams onto us.
I feel if we were to play Fellaini in defensive midfield as I explained in the 'How would you use Fellaini?' thread, he would need a player of Scholes's ilk next to him. Someone who will get on the ball and dictate play, while Fellaini can worry about breaking up play and keeping it simple.