One little thing I picked up on Saturday was in the first half, Bournemouth knocked a ball down the channel, but head height for Funes to just head away comfortably. Instead he let it go over his head, I think he was hoping he'd gather possession again or shepherd it out. Instead that Josh King (who had a decent game to be fair) ran him all the way and won a corner. It's small moments like that which seperate decent defenders from the quality defenders we require.
He's been more than adequate cover though and he gives his all.