I think the frustrating thing about him right now is that he isn't doing enough to get more involved.
Sure he isn't the greatest in the LW Spot, but it seems instead of trying to make use of his current abilities the best he can in that position he just looks like a man who doesn't really want to get involved much. His only involvement most of the time is just him attempt to fire a rocket at the Goal.
In the last couple of games, the Right-hand side looked more competent than the Left-hand side with Alba-Cou, the first time in ages as well. Despite the number of games Coutinho and Alba played together both don't have any Chemistry whatsoever.