I'd still like to see him on the left of the 4-2-3-1 with Ben Arfa other side. I know Marveaux seems very much like a drift centrally kid of player, but his left foot could offer excellent width in the right situation.
With our current full-back set-up, that would give us both the natural crossing option (Marveaux and Debuchy) and the option to cut inside (Santon and Ben Arfa) on both flanks.