It's not about the money available. It was how he was perceiving the situation. He was basically complaining about lack of ambition from the board and players atittude, and the more he b*tched about it, the more the team falled apart.
But that's the problem, money is a pretty indicator and it goes against that alleged perception. The board wouldn't have increased the wage bill by +100m and spent +300m on new player if winning trophies wasn't a priority, as for players' attitude it was his job to handle it. So I don't understand how you understand his meltdown, there is no reasonable excuse for it.