effort not the problem, hardly ever is , problem is we have two centre midfield players that can't pass the ball, and its now illuminating all the other deficiencies in the squad. it boils down to rafa not really knowing much about the game, trying to kill the game and snatch wins from his 'senior' players
i do think the effort is a problem. you can see the likes of mascherano not giving 100%. why is the question, and that's another problem.
then you're right about the centre midfield. lucas-masch hasn't and never will be a good combination. there we have another big problem.
rafas policy on substititions is another problem. he's never willing to do something that will change his gameplan and that is why we never see him making any substitutions until it's too late for the game to change.