I believe there are 2 contenders but neither will get it Stockdale and Dunk but Knockhaert will get it because he looks better with his skill and is a fans fav disregarding the times he hangs on to the ball just that 1 move too long.
Attacking players grab the eye so I expect it to go to Murray or Knockhaert but I would vote for Stockdale Dunk or Duffy as not conceeding goals is the 1st road to success.