One thing I like about Sa is his consistency in coming for the ball. The defence know that and can account for it. It's why Saiss and Coady hit the line on the goal. Obviously you've then got to get out again, but that's a bad job by them. It's one of the reasons we are more solid defending set pieces. There's nothing wrong with being a line keeper like Patricio is more or less, but as a defence it's a different skill set to protect that which we too often didn't have the personnel and/or coaching to do.
He'll be very important next match because West Ham' s set piece delivery is top notch and as you saw yesterday on the first and third goals, legally blocking off the keeper is part of their strategy.
I can live with the occasional drop, if he costs us while going walkabout I'll be less tolerant. He hasn't to date, but there's been enough close misses to know it'll happen at some point