Cos we brought in Sissokho who has been playing in Marv's best position. And we all know how he started here.
In the middle he' so much better. He just looks happier and more comfortable. "Get me the ball, i'll keep it." If the right pass isn't on he'll slow it down and play it simple. Today, Siss looks to only have 1 gear and it's GO GO GO! Always looking for the killer ball when sometimes his great runs would be better if he passed it simple.
May be wrong, but I'm under the impression that he was dropped before Sissoko arrived. IIRC he picked up an injury after the Christmas period when he was by far our best player, then when he returned he was played on the left wing where he did even less than Guti. After that he hasn't had a look in until the 10 minute cameo against Chelsea and the odd substitute appearance/Europa game since.