Sheaf has learnt from last season it seems. He's quicker in what he does and when he can't release the ball, he uses that frame of his to hold players off until he can do something. He's still learning and clearly a work in progress but the future looks good for him.
As for Kelly, when he's fit He's an optional on the bench for now but he will be needed and let's not kid ourselves, sheaf and hamer will not start every game together, it's just not possible and that's where Kelly comes in and eventually Eccles too