Everyone and their mother slaughtered Dembélé after that Liverpool miss at Camp Nou; this fool has missed open chances left and right, with his best contributions being his defensive workrate (which to be fair is very good and also an important aspect), whilst he is our only primary 'attacker' - even if he's not an 'archetype' CF or striker, he should be more decisive than what he's been so far.
Anyways, he's just another symptom to be honest. The real issue is the whole structure of the club and the boards/coaching staff's footballing perspective. The board's focal point is economic growth and starpower, buying solutions, whilst this gigantic footballing brand with all of its assets started out humble and hardworking, implementing Johanns principles to the core. Setién needs time and is an avid believer of Cruyffs philosophy, but without the proper groundwork from top to bottom within the club, all those ideas will be futile and never come to fruition.