The main reason for City's success is spending so much money, people who say we've spent the same over the last decade ignore that City had a young team with players like aguero, toure, kompany, Silva who would each be like 80m plus players in current game and we needed a whole new side. They've also been shown to pay managers under the table, so no reason to think they wouldn't pay players under the table additional wages. They've also been able to maintain state of the art facilities at the same time as investing heavily in the team