To sum it up Iniesta is injured and Raki and Busi are in worst form of their lives. Apart from Rakitic, Iniesta and Busi we have:
Gomes - slow as fuck, bad defensively, unnable to do pressing, totally not accustomed to our stlye of play
Rafinha - more CAM or RW than midfielder and bad defensively also bad at pressing
Denis - same as Rafinha
Arda - not a midfielder, bad defensively, and past his prime
Roberto - playing as a RB
When you sume it up like this, it looks like someone hit his head on the wall when squad was formed. Too many simmilar players and too few realy god midfield options right now.