The job of a football manager is to win so continuing to insist that his style of play will work eventually when there is little evidence to support this is stupidity. You can't play like Barcelona without the budget to buy the players to play the system effectively. The club's obsession with possession football has partly led to it's demise. They should be obsessed with winning instead, that should should be in the club's DNA. Getting smashed at home 4-0 after having failed to score in 2 out of the previous 4 league matches already while enjoying almost 70% possession on average which is way higher than any other club is going to attract criticism but still, he gets a lovely pay off for failure