To be honest I wouldn't pay too much attention to some Fulham fans opinions on him, they are playing shit and its always easy to blame a young loan signing from a top club who isn't given a run in the side.
Whenever I've checked up on him he is usually a sub later in the game, when they are already losing so hard to make an impression when the games already getting away from the team. Maybe he plays more often when Im not watching.
Saying that , he seems to be in a similar phase as he was before, showing good potential but lacking that bit of sharpness and tactical understanding side of things. I think theres a good player in there but needs to be coached out.
Maybe another loan would suit him better than a struggling championship side. I feel Celtic might be a bit too easy for him as his size alone would allow him to dominate most teams and they won't drop Brown or Johanson to play him regularly. Someone like Lille might be a good shout, they play a 3 man midfield usually with none of them being standout players, so should get some decent game time in theory.