How is Usman a liability. Sounds like you just hate the guy. We all know this is Usman''s last series, but he hasn't been terrible. Yeah, he was dropped after Head did well, then when brought back in last minute, he stepped up. That shows his class and shows that he has not been crap.
You keep talking about fielding like it's some amazing thing that Green does. Ussie is a slips fielder and in close. He is barely a liability as he has made no glaring mistakes or problems. He's been ever reliable in that spot over the years. We are not arguing about the future, we are talking about now. We all agree that Green is the future, but arguing that in the last test of the series is pointless. We should be arguing on current form, and on current form, Green has not earned his spot in the side.