Very few people writing him off completely to be fair. He's played 26 games for us, with 16 starts, it's enough to have formed an opinion of him i'd say. Doesn't mean the opinion is 'right' obviously, it can change either way depending on his performances over the next 10 games or whatever we've got left, but it's hardly kneejerk to pass comment on a player after 26 games (particularly one who's only on loan).
I've said before, of course he's got ability - he's an international footballer who's played in 2 of the top 5 leagues already, as well as the CL, the Europa League final and the World Cup - we're not really debating whether he's capable of playing top level football because that ship has well and truly sailed, we're just debating whether he's performing at the sort of level we want to see here in the long term.