I'm not talking about rosell or bartomeu. Only zubi. His scouting work gave us douglas, and his stupidity insisted on signing vermaelen, even after the medical team said "don't do it, he's injured". Song also came from his brilliant scouting.
This excuse you wrote ("It seemed they looked for a RB and couldnt find one they wanted when Cuadrado priced too high and decided to stay with Alves rather than over pay on a gamble") is pretty much why zubi sucked. They all knew they weren't going to renew alves. So he tried to be smart on a gamble, that will cost more a lot now. Either in the renewal of alves, or in the 1st half of next season, with montoya, adriano and douglas as rb's. That's why he got fired...
He was a crap sporting director, and most of his work was to travel with the team in all the away games. He was always in the pictures, bar one time or another.