It might have been coached out of him, dribbling isn't really part of tiki Taka and he's probably trying to fit in with the possesion style. Or he's lost confidence and is scared to take players on.
I bet he was instructed to miss open nets too, make Messi look good
. He is not Barca material and never will be . The coach doesn't have anything to do with the fact that he couldn 't score even if his life was on the line. He finished the season in a decent way but only because we won La Liga and there was no pressure on him. People keep saying the same things over and over again in the last 1 - 1,5 years ...that he is young , he has potential , he will be great , etc etc . 
