His movement is that non - existent it's as if someone draws a white spot on the pitch and says to him "you stand on spot, and don't move off it"
....very interesting point is that. The true defensive midfielder has to almost have that discipline. I remember Fellaini being asked to play that role and saying he didn’t have the discipline to stay in a restricted area. Cattermole said the same at Sunderkand.
Based on your observation, I wonder if Silva asked him to play that defensive role. It’s one I suggested last week that Delph should play.